Tio2 Pat List

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PAT. NO. Title 7,064,159 Pearlescent white paint composition containing a film-former and a solid material comprising mica, titanium dioxide and aluminum, and process for using same RE39,068 Method and apparatus for producing titanium dioxide 7,029,648 Process for making durable rutile titanium dioxide pigment by vapor phase deposition of surface treatment 6,991,677 Titanium dioxide-calcium carbonate composite particles 6,989,054 Ink jet white ink and titanium dioxide slurry therefor 6,981,666 Titanium dioxide slurries 6,962,622 Titanium dioxide pigment composition 6,956,006 Modified titanium dioxide and a method for its preparation 6,939,611 Window glass employing titanium dioxide photocatalyst 6,936,348 Method for deposition of rutile-type titanium dioxide, and substrate and glass flakes having the oxide attached thereto 6,921,473 Electrolytic reduction of metal oxides such as titanium dioxide and process applications 6,919,138 Titanium dioxide cobalt magnetic film and its manufacturing method 6,905,814 Use of film-forming titanium dioxide dispersions for cleaning and disinfecting surfaces, film-forming titanium dioxide dispersions 6,890,656 High rate deposition of titanium dioxide 6,888,310 Plasma display panel with dielectric layer containing a filler of mica coated with titanium dioxide 6,852,306 Process for making durable rutile titanium dioxide pigment by vapor phase deposition of surface treatments 6,824,826 Use of photocatalytic preparations of colloidal titanium dioxide for preserving the original appearance of cementitious, stone, or marble products 6,790,902 Unfinished rutile titanium dioxide slurry for paints and paper coatings 6,773,697 Iron oxide and silicon dioxide-titanium dioxide mixed oxide 6,740,312 Titanium dioxide particles 6,699,317 Titanium dioxide slurries 6,695,906 Continuous processes for producing titanium dioxide pigments 6,663,851 Surface-modified titanium dioxide 6,663,844 Pyrogenic titanium dioxide 6,660,243 Titanium dioxide methods of production 6,656,261 Titanium dioxide pigments with improved gloss and/or durability 6,653,356 Nanoparticulate titanium dioxide coatings, and processes for the production and use thereof 6,627,173 Doped titanium dioxide 6,626,989 Rutile titanium dioxide effect pigments and production thereof 6,620,233 Goniochromatic luster pigments which are based on titanium dioxidecoated siliceous platelets heated in a reductive atmosphere 6,616,746 Titanium dioxide pigment and method for production thereof

32 6,613,301 Method for producing nanometer-sized ultrafine titanium dioxide 33 6,602,338 Titanium dioxide film co-doped with yttrium and erbium and method for producing the same 34 6,576,589 Method for making anatase type titanium dioxide photocatalyst 35 6,576,052 Titanium dioxide pigment, process for producing the same, and resin composition containing the same 36 6,569,920 Titanium dioxide slurries having improved stability 37 6,569,439 Process for making personal care compositions comprising titanium dioxide and personal care compositions made by the process 38 6,569,386 Process for providing a titanium dioxide layer on a material that contains a light absorbing substance and the product so formed 39 6,562,314 Methods of producing substantially anatase-free titanium dioxide with silicon halide addition 40 6,548,039 Processing aqueous titanium solutions to titanium dioxide pigment 41 6,534,068 Iron oxide and silicon dioxide-titanium dioxide mixed oxide 42 6,517,629 Methods for making low volatile titanium dioxide pigments 43 6,512,013 Titanium dioxide nucleating agent systems for foamable polymer compositions 44 6,506,809 Titanium dioxide nucleating agent systems for foamable polymer compositions 45 6,482,751 Titanium dioxide layer serving as a mask and its removed method 46 6,468,658 Process for preparing grit blasting particles coated with titanium dioxide 47 6,468,402 Process for coating a substrate with titanium dioxide 48 6,465,042 Material having titanium dioxide crystalline orientation film and method for producing the same 49 6,454,831 Use of a fine-grained product produced during the production of titanium dioxide 50 6,447,738 Coproducing alumina, iron oxide, and titanium-dioxide from aluminum ore bodies and feedstocks 51 6,440,383 Processing aqueous titanium chloride solutions to ultrafine titanium dioxide 52 6,437,088 Process for producing polyester with coated titanium dioxide 53 6,419,893 Process for producing and cooling titanium dioxide 54 6,413,490 Granules based on pyrogenic titanium dioxide and a process for preparing the granules 55 6,410,614 Incorporating titanium dioxide in polymeric materials 56 6,409,928 Photocatalytic oxidation of organics using a porous titanium dioxide membrane and an efficient oxidant 57 6,407,156 Photocatalytic titanium dioxide powder, process for producing same, and applications thereof 58 6,406,532 Titanium dioxide powder which contains iron oxide 59 6,399,033 Process for increasing the yield in the manufacture of titanium dioxide by the chloride process 60 6,395,795 Titanium dioxide nucleating agent systems for foamable polymer compositions 61 6,395,081 Methods for producing titanium dioxide pigments having improved

gloss at low temperatures 62 6,387,844 Titanium dioxide photocatalyst 63 6,387,347 Controlled vapor phase oxidation of titanium tetrachloride to manufacture titanium dioxide 64 6,383,980 Photocatalytic titanium dioxide powder, process for producing same, and applications thereof 65 6,375,923 Processing titaniferous ore to titanium dioxide pigment 66 6,362,121 Substrate with a photocatalytic coating based on titanium dioxide and organic dispersions based on titanium dioxide 67 6,342,099 Coated titanium dioxide pigments and processes for production and use 68 6,328,938 Manufacture of titanium dioxide with recycle of waste metal chloride stream 69 6,312,103 Self-cleaning titanium dioxide coated ink-jet printer head 70 6,306,361 Method for manufacturing photocatalytic anatase titanium dioxide powder 71 6,280,700 Film of titanium dioxide containing silicon dioxide and a method of forming the same 72 6,268,019 Preparation of fluorine modified, low haze, titanium dioxide films 73 6,251,803 Method for forming a titanium dioxide layer 74 6,238,965 Method for forming a titanium dioxide layer 75 6,238,472 Metal oxide coated titanium dioxide lamellas 76 6,231,662 Surface treatments for titanium dioxide and other industrial pigments 77 6,231,343 Method for bleaching discolored tooth by titanium dioxide photocatalyst 78 6,228,502 Material having titanium dioxide crystalline orientation film and method for producing the same 79 6,217,999 Photochemical reactor element containing microcapsulated titanium dioxide photocatalyst 80 6,207,131 Method and apparatus for producing titanium dioxide 81 6,200,375 Titanium dioxide, preparation and use 82 6,187,438 Titanium dioxide particles, method for their preparation and their use in cosmetics, varnish and surface coating 83 6,159,522 High performance titanium dioxide clouding agent and method of manufacture thereof 84 6,153,539 Liquid phase deposition method for growing a titanium dioxide on a gallium arsenide substrate 85 6,139,617 Titanium dioxide pigments 86 6,139,614 Goniochromatic luster pigments based on titanium dioxide-coated silicatic platelets which have been heated in a reducing atmosphere 87 6,136,186 Photocatalytic oxidation of organics using a porous titanium dioxide membrane and an efficient oxidant 88 6,133,360 Polycarbonate resin blends containing titanium dioxide 89 6,126,915 Titanium dioxide reduced in volatile water content, process for producing the same, and masterbatch containing the same 90 6,123,927 Cosmetic composition containing spindle shaped fine particles of titanium dioxide 91 6,117,337 Enhanced photocatalytic oxidation of organics using a porous titanium

dioxide membrane 92 6,113,873 Stable anatase titanium dioxide and process for preparing the same 93 6,107,390 Thermoplastic resin composition containing titanium dioxide pigment, and process for preparing same 94 6,103,303 Dendrite or asteroidal titanium dioxide micro-particles and process for producing the same 95 6,080,802 Process for preparing an aqueous dispersion of composite particles including polymeric latex adsorbed to titanium dioxide 96 6,074,472 Hydrolytic preparation of titanium dioxide pigments 97 6,048,505 Continuous non-polluting liquid phase titanium dioxide process and apparatus 98 6,037,289 Titanium dioxide-based photocatalytic coating substrate, and titanium dioxide-based organic dispersions 99 6,017,993 Thermoplastic resin composition containing titanium dioxide pigment, and process for preparing same 100 6,007,945 Negative electrode for a rechargeable lithium battery comprising a solid solution of titanium dioxide and tin dioxide 101 5,993,533 Continuous wet treatment process to prepare durable, high gloss titanium dioxide pigment 102 5,985,020 Plate-like titanium dioxide reduction pigment 103 5,942,281 Treatment process for titanium dioxide pigments, novel titanium dioxide pigment and its use in paper manufacture 104 5,942,201 Process utilizing titanium dioxide as a catalyst for the hydrolysis of carbonyl sulfide 105 5,919,422 Titanium dioxide photo-catalyzer 106 5,910,213 Treated titanium dioxide 107 5,886,069 Titanium dioxide particles having substantially discrete inorganic particles dispersed on their surfaces 108 5,858,078 Platelet-shaped titanium dioxide pigment 109 5,840,112 Method and apparatus for producing titanium dioxide 110 5,840,111 Nanodisperse titanium dioxide, process for the production thereof and use thereof 111 5,824,146 Method for making a photodurable aqueous titanium dioxide pigment slurry using a high level of aluminum co-oxidant 112 5,824,145 Method for making a photodurable aqueous titanium dioxide pigment slurry 113 5,820,977 Support for photographic printing paper comprising silicone coated titanium dioxide pigments 114 5,817,298 Titanium dioxide sunscreens 115 5,811,192 Titanium dioxide film having photocatalytic activity and substrate having the same 116 5,808,118 Surface treatments for titanium dioxide and other industrial pigments 117 5,785,748 Titanium dioxide pigments 118 5,779,912 Photocatalytic oxidation of organics using a porous titanium dioxide membrane and an efficient oxidant 119 5,763,377 Compositions and methods for removing titanium dioxide from surfaces

120 5,762,914 Flame-hydrolytically produced titanium dioxide mixed oxide, method of its production and its use 121 5,759,511 Granular scrubs for use in manufacturing titanium dioxide pigment 122 5,759,251 Titanium dioxide ceramic paint and methods of producing same 123 5,753,025 Titanium dioxide pigment coated with boria-modified silica and alumina 124 5,744,108 Process for the thermal treatment of titanium dioxide in a circulating fluidized bed and the use thereof 125 5,730,796 Durable pigmentary titanium dioxide and methods of producing the same 126 5,730,795 Process for manufacturing titanium dioxide pigment having a hydrous oxide coating using a media mill 127 5,710,186 Foams containing treated titanium dioxide and processes for making 128 5,707,437 Silanized titanium dioxide pigments resistant to discoloration when incorporated in polymers 129 5,698,205 Photostabilization of titanium dioxide sols 130 5,698,177 Process for producing ceramic powders, especially titanium dioxide useful as a photocatalyst 131 5,693,329 Cosmetic composition which prevents or attenuates the photo-reactivity of titanium dioxide nanopigments 132 5,683,669 Metal chloride generator and improved process for the production of metal chlorides used in the manufacture of titanium dioxide by the chloride process 133 5,672,330 Flame-hydrolytically produced titanium dioxide mixed oxide method of its production and its use 134 5,665,466 Treatment process for titanium dioxide pigments, novel titanium dioxide pigment and its use in paper manufacture 135 5,630,995 Preparation of anatase titanium dioxide 136 5,622,628 Titanium dioxide slurries concentration 137 5,620,638 Barium oxide-rare earth oxide-titanium dioxide based ceramics exhibiting isotropy 138 5,599,519 Oxidation of titanium tetrachloride to form titanium dioxide 139 5,597,515 Conductive, powdered fluorine-doped titanium dioxide and method of preparation 140 5,591,506 Non-polluting alkali-metal bisulfate system for producing titanium dioxide pigment 141 5,585,078 Process for reducing carbon monoxide and carbonyl sulfide emissions from a fluidized bed titanium dioxide chlorinator 142 5,573,744 Method for enhancing production of titanium dioxide 143 5,565,591 Silicone polymers for the modification of titanium dioxide 144 5,547,822 Process for producing titanium dioxide pigment for photograph and photographic support comprising same 145 5,540,907 Process for preparing high solids content titanium dioxide suspension with a dechlorinating agent 146 5,538,708 Expansion section as the inlet to the flue in a titanium dioxide process 147 5,536,487 Process for the use of rutile promoter and control additives in the manufacture of titanium dioxide by the chloride process

148 5,536,448 Dendrite or asteroidal titanium dioxide micro-particles 149 5,534,585 Polymer-modified particulate titanium dioxide 150 5,534,584 Glass-reinforced thermoplastic resin compositions containing the anatase form of titanium dioxide as a white pigmenting agent 151 5,498,406 Titanium dioxide-based sunscreen compositions 152 5,468,471 Titanium dioxide dispersions, cosmetic compositions and methods for using same 153 5,468,463 Process for the preparation of very pure titanium dioxide 154 5,464,708 Titanium dioxide-based material 155 5,456,899 Preparation of titanium dioxide 156 5,451,390 Flame-hydrolytically produced titanium dioxide mixed oxide, method of its production and its use 157 5,451,252 Subpigmentary titanium dioxide with improved photostability 158 5,443,811 Method of preparing titanium dioxide 159 5,433,779 Rutile titanium dioxide coated micaceous pigments formed without tin 160 5,427,771 Transparent cosmetic composition that reflects infrared radiation based on TiO2 flakes and its use for protecting the human epidermis against infrared radiation 161 5,415,936 Surface-modified pyrogenically produced titanium dioxide 162 5,412,019 Polymer-modified particulate titanium dioxide 163 5,409,679 Process for the production of titanium dioxide 164 5,393,510 High solids content titanium dioxide suspension 165 5,385,960 Process for controlling adsorption of polymeric latex on titanium dioxide 166 5,383,963 Composite fibers of potassium hexatitanate and titanium dioxide 167 5,372,905 Surface-modified pyrogenically produced titanium dioxide 168 5,366,938 Shaped articles based on pyrogenically produced titanium dioxide 169 5,334,362 Process for the production of disposable products from metal chlorides in a titanium dioxide chloride process 170 5,332,433 Titanium dioxide dispersibility 171 5,330,953 Preparation of anatase titanium dioxide 172 5,298,169 Treatment of waste sulfuric acid by gypsum precipitation in a titanium dioxide process 173 5,282,977 Separation of heavy metals from waste water of the titanium dioxide industry 174 5,279,662 Alkyl polyglycoside as a dispersant for titanium dioxide 175 5,277,816 Process for producing titanium dioxide 176 5,270,076 Process for coating alkyl ketene dimer on titanium dioxide 177 5,266,108 Using compacted titanium dioxide pigment particles in the cooling section of the chloride process for making TiO.sub.2 178 5,264,033 Process for producing titanium dioxide pigment for photograph and photographic support comprising same 179 5,256,728 Polycarbonate-titanium dioxide compositions and method 180 5,252,658 Pigment-containing premixture of titanium dioxide with olefin polymer 181 5,248,497 Production of purified iron chloride by a vacuum process in the manufacture of titanium dioxide

182 5,245,089 Alkylation reactions catalyzed by gallium-modified titanium dioxide 183 5,242,880 Photoactive catalyst of barium phosphate or calcium phosphate supported on anatase titanium dioxide 184 5,240,056 Tire with cured rubber portion containing titanium dioxide over which is provided a composite coating 185 5,231,127 Metal titanates as partial replacements for titanium dioxide in pigmented polyvinyl chloride-type compositions 186 5,231,067 Shaped articles based on pyrogenically produced titanium dioxide, method of their production and their use 187 5,229,087 Process for the preparation of titanium dioxide 188 5,215,580 Process for the production of a fine particle titanium dioxide 189 5,204,083 Process for preparing titanium dioxide 190 5,203,916 Titanium dioxide pigment and method of preparation 191 5,196,181 Process for the production of titanium dioxide 192 5,188,831 Sunscreens containing both water and oil dispersible titanium dioxide particles 193 5,173,397 Photographic support with titanium dioxide pigmented polyolefin layer 194 5,173,386 Titanium dioxide aggregates process for producing same and electrophotographic photosensitive material containing same 195 5,171,631 Spacer/extender for titanium dioxide in pigment systems for coatings 196 5,165,995 Process for coating titanium dioxide pigments 197 5,159,056 Preparation of arylene sulfide polymer in the presence of titanium dioxide 198 5,149,519 Preparation of sulfur-free titanium dioxide 199 5,147,629 Process for production of nuclei for use in titanium dioxide manufacture 200 5,142,000 Process for increasing polyamide molecular weight with organophosphonic acid or ester catalysts in the presence of aluminacontaining titanium dioxide 201 5,124,390 Calcium sulfate as a partial replacement for titanium dioxide in white compounds 202 5,120,701 Titanium dioxide compacts, method of their production and a catalyst coated on a carrier of titanium dioxide 203 5,115,457 Method of determining titanium dioxide content in paint 204 5,109,051 Aluminosilicate compositions as partial replacement for titanium dioxide in pigmented polyvinyl chloride and polyvinyl chloride type compositions 205 5,100,858 Moldable/extrudable titanium dioxide particulates 206 5,096,711 Titanium dioxide stabilized oil in water pesticidal emulsion 207 5,089,367 Electrophotographic photoreceptor containing titanium dioxide 208 5,075,206 Photographic support with titanium dioxide pigment polyolefin layer on a substrate 209 5,069,963 Magnetic recording medium with a back coat layer of nitrocellulose and polyurethane binder resins and which contains carbon black and titanium dioxide particles 210 5,068,093 Method for producing titanium dioxide 211 5,068,056 Aqueous dispersions of acicular titanium dioxide

212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239

240 241 242

5,061,473 Titanium dioxide, a process and its production 5,049,194 Titanium dioxide dispersions including denaturant 5,045,301 Moldable/extrudable titanium dioxide particulates 5,043,015 Titanium dioxide dispersions including denaturant 5,041,162 Process for producing durable titanium dioxide pigment 5,037,476 Process for improving photostability of titanium dioxide pigments in binder compositions without decreasing reflectivity 5,015,264 Nonpigmentary titanium dioxide powders 5,009,879 Titanium dioxide, a process for its production and its use 5,002,917 Molded articles based on pyrogenically produced titanium dioxide method for their manufacturing and uses 5,002,608 Titanium dioxide coated micaceous iron oxide pigments and method for producing the same 4,999,181 Method of manufacturing titanium dioxide powder 4,988,495 Process for the recorvery of sulphuric acid in the production of titanium dioxide 4,986,742 Process for the production of high-grade titanium dioxide by sulfate method 4,961,911 Process for reducing carbon monoxide emissions from a fluidized bed titanium dioxide chlorinator 4,946,784 Spherical biocatalyst containing titanium dioxide particles 4,944,936 Titanium dioxide with high purity and uniform particle size and method therefore 4,937,064 Process of using an improved flue in a titanium dioxide process 4,923,682 Preparation of pure titanium dioxide with anatase crystal structure from titanium oxychloride solution 4,909,852 Treatment of titanium dioxide and other pigments to improve dispersibility 4,902,485 Process for the production of titanium dioxide pigments 4,879,120 Polycaprolactam with titanium dioxide content 4,863,711 Process for preparing nodular pigmentary titanium dioxide 4,855,204 White toner containing a high purity titanium dioxide pigment 4,846,891 Titanium dioxide pigment, electrophoretic coating compositions including such pigment, and method for treating titanium dioxide pigment 4,803,064 Process for preparing titanium dioxide in the form of spherical particles by hydrolysis of Ti(IV) 4,803,056 System for increasing the capacity of a titanium dioxide producing process 4,797,163 Process for the production of titanium dioxide pigments 4,784,841 Process for the production of coarse, scrubbing aggregates of titanium dioxide particles by oxidation of titanium tetrachloride in the vapor phase and use of said aggregates for the prevention of deposit formation in the same production process 4,781,761 Titanium dioxide pigment coated with boria-modified silica 4,759,916 Process for preparing a pigmentary titanium dioxide 4,759,800 Process for the improvement of titanium dioxide pigments by post-

treatment 243 4,752,340 Titanium dioxide pigments 244 4,741,780 Treatment of titanium dioxide and other pigments to improve dispersibility 245 4,737,194 Titanium dioxide pigment coated with cerium cations, selected acid anions, and alumina 246 4,693,751 Titanium dioxide suspension for use in film coating 247 4,689,364 Process for preparing polyamide based, titanium dioxide pigmented pulverulent coating compositions having at least ten aliphatically bound carbon atoms per carbonamide group 248 4,683,007 Titanium dioxide dispersions and processes for their production 249 4,675,251 Spherical particles of titanium dioxide coated with a uniform layer of iron oxides having a narrow size distribution, and process for preparing the same 250 4,670,491 Stabilized titanium dioxide-pigmented polyolefin compositions 251 4,663,131 Process for the preparation of titanium dioxide 252 4,633,935 Method for the cooling of hot gaseous solids suspensions of titanium dioxide 253 4,623,605 Dry developer for developing electrostatic latent images contains silica and titanium dioxide 254 4,599,114 Treatment of titanium dioxide and other pigments to improve dispersibility 255 4,596,786 Calcined and reduced titanium dioxide on silica-tungsten oxide catalyst 256 4,540,441 Salt removal from treated titanium dioxide 257 4,536,241 Method of making a titanium dioxide oxygen sensor element with fast transient response 258 4,517,163 Process for making titanium dioxide concentrates 259 4,505,886 Process for preparing high quality titanium dioxide 260 4,504,522 Method of making a titanium dioxide oxygen sensor element by chemical vapor deposition 261 4,474,681 Production of aqueous suspensions of finely divided titanium dioxide 262 4,460,550 Process for production of titanium dioxide from titaniferrous ore 263 RE31,602 Coated titanium dioxide pigment and a process for the production of the same 264 4,448,918 Poly(arylene sulfide) composition containing titanium dioxide and 3mercaptopropyltrimethoxysilane 265 4,448,609 Process for the production of aqueous dispersions of pigmentary titanium dioxide 266 4,405,376 Titanium dioxide pigment and process for producing same 267 4,394,672 Titanium dioxide rectifier 268 4,391,840 Process for preparing meat products containing a protein extender with titanium dioxide tracer 269 4,388,425 Production of concentrates of titanium dioxide in polycaprolactam 270 4,388,288 Preparation of shaped titanium dioxide catalyst/carrier and catalysis of gaseous sulfur compounds therewith 271 4,386,146 Dye sensitized titanium dioxide electrophotographic photosensitive materials

272 4,377,417 Titanium dioxide pigment treated to suppress yellowing in polymers 273 4,375,989 Coated titanium dioxide pigment and a process for the production of the same 274 4,374,675 Post-treated titanium dioxide and process for producing same 275 4,361,951 Method of fabricating a titanium dioxide rectifier 276 4,357,170 Titanium dioxide pigment treated to suppress yellowing in polymers 277 4,343,345 Process of applying a titanium dioxide coating to a centrifugal casting mold 278 4,328,040 Process for the production of titanium dioxide pigments with high weather resistance 279 4,324,694 Supported catalysts containing vanadium pentoxide, titanium dioxide, phosphorus, rubidium and/or cesium, with or without zirconium dioxide 280 4,321,237 Treating hydrolysis residues from preparation of titanium dioxide 281 4,321,152 Grinding of titaniferous ores to enhance recovery of titanium dioxide 282 4,318,836 Titanium dioxide filled polyphenylene ether compositions 283 4,293,625 Anchor layer in photolithographic receptor base contains oxide surface treated titanium dioxide 284 4,292,090 Removal of titanium dioxide from a filter element 285 4,292,085 Method for converting into a non-polluting particulate product the ferrous sulphate obtained in the production of titanium dioxide by the sulphate process 286 4,288,470 Method of making non-volatile semiconductor memory elements having multiple dielectric layers of silicon nitride, silicon dioxide, and rutile titanium dioxide 287 4,288,418 Process for manufacturing titanium dioxide 288 4,288,417 Process for manufacturing titanium dioxide 289 4,288,254 Predispersed slurry of titanium dioxide 290 4,287,228 Photopolymerizable epoxide coating compositions containing titanium dioxide pigment and method of polymerization using same 291 4,268,422 Titanium dioxide hydrate of a particular structure and process of manufacture thereof 292 4,241,042 Spherical titanium dioxide particles and process of manufacture 293 4,239,548 Titanium dioxide pigment 294 4,235,768 Production of readily dispersible titanium dioxide pigments 295 4,228,038 Method for the preparation of catalyst of vanadium pentoxide on substrate of titanium dioxide 296 4,222,789 Light-stable titanium dioxide pigment composition 297 4,215,155 Method of preparing modified titanium dioxide photoactive electrodes 298 4,206,021 Process for the production of pigmentary titanium dioxide by the sulphuric acid method 299 4,200,474 Method of depositing titanium dioxide (rutile) as a gate dielectric for MIS device fabrication 300 4,199,370 Weather resistant titanium dioxide pigment having improved optical properties and process for making same 301 4,192,794 Titanium dioxide-pigmented polymer compositions having improved visible and ultraviolet light stability

302 4,187,103 Treated photoconductive titanium dioxide sheet 303 4,181,754 In situ method of preparing modified titanium dioxide photoactive electrodes 304 4,181,593 Modified titanium dioxide photoactive electrodes 305 4,179,306 Stabilizing titanium dioxide pigments with vanadates 306 4,178,981 Copper casting method using titanium dioxide release method 307 4,177,081 Titanium dioxide pigment slurries to impart high gloss to water-based acrylic paint systems 308 4,175,071 Titanium dioxide as a U.V. screen in fire retardant vinyl polymers 309 4,170,485 Titanium dioxide slurries from recycle material 310 4,134,776 Exterior grade titanium dioxide coated mica 311 4,133,864 Process for preparing titanium dioxide 312 4,125,412 Process for the production of durable titanium dioxide pigment 313 4,096,094 Supported catalysts containing vanadium pentoxide and titanium dioxide 314 4,081,507 Process for removing chemisorbed and interstitial chlorine and chlorides from a hot titanium dioxide beneficiate-carbon mixture 315 4,080,488 Dye-titanium dioxide photogalvanic cell 316 4,077,794 Method for the manufacture of soil modifiers from waste materials of the manufacture of titanium dioxide 317 4,073,877 Manufacture of titanium dioxide pigment seed from a titanium sulfate solution 318 4,062,692 Chalking-resistant titanium dioxide pigment 319 4,061,503 Silane treatment of titanium dioxide pigment 320 4,050,951 Process for the post-treatment of titanium dioxide pigments 321 4,045,205 Method for the manufacture of soil modifiers from waste material of the manufacture of titanium dioxide 322 4,042,557 Process for preparing a high concentration of titanium dioxide slurry in dimethylacetamide or dimethylformamide 323 4,042,476 Polymerized titanium dioxide for ultraviolet coatings 324 4,036,662 Metal additions to pigments of pseudobrookite-titanium dioxide structure 325 4,028,173 Methods of making combined titanium dioxide and calcium carbonate and opaque paper containing the resulting combination 326 4,025,483 Stabilizing aqueous titanium dioxide pigment slurries by blending therewith plastic particles 327 4,022,636 Titanium dioxide pigment and process for making same 328 4,021,533 Manufacture of titanium dioxide by the sulphate process using nuclei formed by steam hydrolysis of TiCl.sub.4 329 4,016,115 Unsaturated polyester resin composition containing titanium dioxide 330 4,012,338 Process for manufacturing a carrier of titanium dioxide 331 4,005,175 Process for the joint production of sodium tripolyphosphate and titanium dioxide 332 3,981,978 Working up aqueous titanium dioxide hydrate suspensions 333 3,981,737 Process for producing lightproof titanium dioxide pigment 334 3,973,963 Photographic support comprising polymerized propylene, talc, titanium

dioxide, elastomer and antioxidant 335 3,971,755 Polymer compositions containing titanium dioxide having improved visible and ultraviolet light stability 336 3,966,892 Process for producing titanium dioxide 337 3,961,975 Titanium dioxide pigmented cellulosic polymer compositions with improved visible and ultraviolet light stability 338 3,960,579 Titanium dioxide containing glasses having a high index of refraction and a high dispersion and process of producing same 339 3,957,526 Titanium dioxide pigments and fillers 340 3,945,965 Mixtures of titanium dioxide and porous synthetic magnesium silicate in opacified emulsion paints