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| Number | Title | Issue Date |
| 8114376 | Multistage method for manufacturing titanium dioxide The manufacture of titanium dioxide by oxidation of titanium tetrachloride in a multistage method, where both oxygen and titanium tetrachloride are added in several stages. In the first stage gaseous TiCl4 is introduced into a preheated oxygen-containing ... | 02/14/2012 |
| 7887780 | Anatase type TiO2 nanorods and their preparation method Provided is a process which includes slowly adding dropwise chilled distilled water to titanium tetrachloride to prepare solution of titanium oxychloride; adding basic solution thereto to maintain pH of the titanium oxychloride solution within a range from 3.5 to 4,... | 02/15/2011 |
| 7416600 | Silicon-titanium mixed oxide powder produced by flame hydrolysis Silicon-titanium mixed oxide powder produced by flame hydrolysis, which consists of aggregates of primary particles, with a BET surface area of 90±15 m2/g, a titanium dioxide proportion of 50±8 wt. % and an anatase/rutile ratio of 60:40 to 70:30. | 08/26/2008 |
| 7413726 | Synthesis of ultrafine rutile phase titanium dioxide particles The present invention provides a low temperature process for the synthesis of ultrafine rutile phase titanium dioxide particles through vapor phase hydrolysis of titanium tetra chloride. ... | 08/19/2008 |
| 7381398 | Titanium oxide powder, methods of manufacturing the same and barium titanate powder, dielectric ceramic, and multilayer ceramic capacitor A titanium oxide powder holding a barium compound on the surface of the particles thereof is used for manufacturing a highly crystalline fine barium titanate powder by solid-phase reaction. When the titanium oxide powder and a barium-containing powder material are m... | 06/03/2008 |
| 7371276 | Titanium dioxide pigment and method for producing the same and resin composition using the same The titanium dioxide pigment of the present invention contains an anatase type crystal in an amount of 98-100% and has an average particle diameter of 0.2-0.4 μm and a whiteness of 95-97 in terms of L value of linseed oil. The titanium dioxide pigment of the presen... | 05/13/2008 |
| 7344591 | Stabilized suspension of titanium dioxide nanoparticles and methods of manufacture Titanium dioxide nanoparticles are formed using a dispersing agent to form nanoparticles with desired size, shape, and uniformity. The titanium dioxide nanoparticles are formed by reacting an inorganic titanium compound with water or ice to form an aqueous titanium ... | 03/18/2008 |
| 7335620 | Photocatalytic powder, photocatalytic slurry, and polymer composition, coating agent, photocatalytic functional molded article and photocatalytic functional structure using the powder An object of the present invention is to provide a photocatalytic powder containing titanium dioxide fine particles containing an anionically active substance, where the electrokinetic potential of the fine particle is from about −100 to 0 mV in an aqueous environ... | 02/26/2008 |
| 7326399 | Titanium dioxide nanoparticles and nanoparticle suspensions and methods of making the same Titanium dioxide nanoparticles are formed using a dispersing agent to form nanoparticles with desired size, shape, and uniformity. The titanium dioxide nanoparticles are formed by reacting an inorganic titanium compound with water or ice to form an aqueous titanium ... | 02/05/2008 |
| 7285328 | Particulate titanium dioxide coated product and method of forming titanium dioxide coated particles A composition of matter comprises particles each having a substrate being an oxide or other suitable compound of a metal other than titanium or of certain non-metal elements, and a coating on said substrate being a layer of titanium dioxide. A method of forming part... | 10/23/2007 |
| 7255847 | Method for making single-phase anatase titanium oxide This invention relates to methods of making single phase nanocrystalline titanium dioxide. It is hereby provided a method for preparing single-phase anatase type titanium dioxide photocatalyst having a particle size of nano level at near room temperatures without th... | 08/14/2007 |
| 7247200 | Titanium dioxide finishing process This disclosure relates to process for producing titanium dioxide (TiO2) pigments, comprising the following steps: a) oxidizing a mixture of titanium tetrahalide and a rutile forming agent, such as aluminum halide, present in the vapor phase and in the pr... | 07/24/2007 |
| 7217407 | Plasma synthesis of metal oxide nanoparticles The present invention is a method of increasing particle surface area and decreasing the concentration of over-sized particles in a process for making metal oxide particles, particularly nanoparticle TiO2, in an inlet-fed, plug flow, plasma reactor by vap... | 05/15/2007 |
| 7208126 | Titanium dioxide nanopowder manufacturing process Titanium dioxide nanopowder is produced by a process, comprising: (a) reacting titanium tetrachloride and an oxygen containing gas in the vapor phase in a flame reactor, at a flame temperature of at least about 800° C. in the pres... | 04/24/2007 |
| 7144840 | TiOmaterial and the coating methods thereof The present invention relates to a titanium dioxide material for coating on a substrate and method of making the same. The coated material is resistant to delamination and can be used for air-purification purposes. ... | 12/05/2006 |
| 7029648 | Process for making durable rutile titanium dioxide pigment by vapor phase deposition of surface treatment The present invention relates to a process for making durable titanium dioxide pigment by vapor phase deposition of surface treatments on the titanium dioxide particle surface by reacting titanium tetrachloride vapor, an oxygen containing gas and aluminum chloride i... | 04/18/2006 |
| 6991677 | Titanium dioxide-calcium carbonate composite particles Titanium dioxide-calcium carbonate composite particles capable of realizing characteristic properties inherent in titanium dioxide such as a high opacity, a process for producing the same, and a complex composition or complex incorporated with the same are provided.... | 01/31/2006 |
| 6919029 | Methods of preparing a surface-activated titanium oxide product and of using same in water treatment processes A method for producing a surface-activated crystalline titanium oxide product having a high adsorptive capacity and a high rate of adsorption with respect to dissolved contaminants includes the steps of preparing a titanium oxide precipitate from a mixture comprisin... | 07/19/2005 |
| 6777374 | Process for photo-induced selective oxidation of organic chemicals to alcohols, ketones and aldehydes using flame deposited nano-structured photocatalyst Organic molecules are partially oxidized in that the gas phase on supported and immobilized photocatalysts deposited having a nanostructure. the photocatalysts are semiconductors such as titanium dioxide and are preferentially coated onto a substrate by flame aeroso... | 08/17/2004 |
| 6774147 | Particles, aqueous dispersion and film of titanium oxide, and preparation thereof An aqueous titanium oxide-dispersed sol comprising titanium oxide particles dispersed in water, said sol comprising chloride ions in an amount of 50 to 10,000 ppm by weight as the chlorine element. Titanium tetrachloride is hydrolyzed to form an aqueous titanium oxi... | 08/10/2004 |
| 6752973 | Process for producing titanium oxide A process for producing a titanium oxide is provided which comprises the steps of (i) mixing an acidic solution of a titanium compound with a nitrogen-containing basic organic compound to obtain a reaction product and (ii) calcining the obtained product. The titaniu... | 06/22/2004 |
| 6720202 | Photovoltaic cells Improved photovoltaic cells utilizing for a semiconductor layer, titanium dioxide powders, consisting of porous particles, ranging in size from 0.1 to 10 microns (10−6 meters), and possess relatively high bulk density combined with high surface area. | 04/13/2004 |
| 6627173 | Doped titanium dioxide A process for the preparation of doped, pyrogenically prepared titanium dioxide is described. The titanium dioxide is doped with zinc oxide, platinum oxide, magnesium oxide, or aluminium oxide, by injecting an aerosol of the oxide into the production stre... | 09/30/2003 |
| 6620508 | Oxide powder and method for preparing the same, and product using the same Firstly, a powder matrix is kept in a fluent state, said powder matrix consisting of a first oxide having an absorbed water amount of 0.1 to 50%, an averaged particle diameter of 0.005 to 0.5 μm and a surface hydroxyl group number of 0.1 to 25 μmol/m | 09/16/2003 |
| 6602918 | Processes of producing a titanium oxide-forming solution and a dispersion with crystalline titanium oxide particles The invention provides a process of producing a titanium oxide-forming solution, wherein a hydrogen peroxide solution is added to a titanium-containing starting aqueous solution to form a peroxotitanium complex, a basic substance is then added to the pero... | 08/05/2003 |
| 6562313 | Electrode material for electrochemical capacitor, electrochemical capacitor comprising the same, and method for the production of the same An electrode material for an electrochemical capacitor having a large capacity, having a titanium oxide compound such as titanium oxide, hydrated titanium oxide or their hydrogenated products, and at least one oxidizable and reducible metal element contai... | 05/13/2003 |
| 6548039 | Processing aqueous titanium solutions to titanium dioxide pigment A hydrometallurgical process is provided for producing pigment grade TiO2 from titanium containing solutions. Generally, the solution is an aqueous solution. The process includes hydrolyzing the solution via complete evaporation in well-control... | 04/15/2003 |
| 6527825 | Process for preparing nanosize metal oxide powders Disclosed is a process for preparing nanoscale metal-based powders from a metal salt and an amphiphilic copolymer containing ethylene oxide. The copolymer and metal salt are mixed to form a metal salt/copolymer paste which is then calcined at a temperatur... | 03/04/2003 |
| 6517629 | Methods for making low volatile titanium dioxide pigments The present invention provides a process for generating titanium dioxide pigments that have reduced moisture retention. By leaching oxidizer discharge and removing alumina containing compounds, one is able to generate a low volatile pigmentary bases. Thes... | 02/11/2003 |
| 6517804 | TiO2 ultrafine powder, and process for preparing thereof The present invention relates to titanium dioxide powder with a large specific surface area, a method for preparing thereof, and a use of the titanium dioxide as a photocatalyst, and more particularly, discloses a method for the preparation of titanium di... | 02/11/2003 |
| 6458452 | Titanium oxide particles, substrate for magnetic recording medium and magnetic recording medium using the same The present invention relates to titanium oxide particles having an average particle size of not more than 0.3 μm, and a BET specific surface area of 15 to 200 m2 /g, containing a soluble sodium salt of not more than 230 ppm, calculated as Na,... | 10/01/2002 |
| 6444189 | Process for making and using titanium oxide particles Titanium oxide particles are prepared from the reaction of an aqueous basic solution with (1) an aqueous acidic titanium salt solution, or (2) an aqueous salt solution of a titanium salt and an aqueous salt solution of a dopant metal salt. In preferred em... | 09/03/2002 |
| 6440383 | Processing aqueous titanium chloride solutions to ultrafine titanium dioxide A hydrometallurgical process is provided for producing ultrafine or nano-sized titanium dioxide from titanium containing solutions, particularly titanium chloride solutions. The process is conducted by total evaporation of the solution, above the boiling ... | 08/27/2002 |
| 6355821 | Preparation of metal alkoxides Methods of forming metal alkoxides and methods of forming precursor solutions of metal alkoxides suitable for the coating of glass in the manufacture of electrochromic devices are disclosed. The method of forming metal alkoxides involves dissolving the me... | 03/12/2002 |
| 6328947 | Method for producing fine particles of metal oxide A method for producing fine particles of metal oxide characterized in that metal halide is hydrolyzed in the presence of organic solvent. According to this invention, under hydrolysis of titanium tetrachrolide, anatase type titanium oxide can be obtained ... | 12/11/2001 |
| 6139816 | Process for the preparation of ultra-fine powders of metal oxides A novel process for the preparation of ultra-fine powders of metal oxide wherein a surfactant is added to the solution for the preparation of the metal oxide to provide nanometer metal oxide powders without the utilization of vacuum or high pressure condi... | 10/31/2000 |
| 6103303 | Dendrite or asteroidal titanium dioxide micro-particles and process for producing the same Dendrite or asteroidal titanium dioxide micro-particles having a length of 0.2 to 0.5 μm, a thickness of 0.05 to 0.1 μm, and a specific surface area of 20 to 130 m2 /gram, are produced by treating hydrated titanium oxide particles with an alk... | 08/15/2000 |
| 6099634 | Fan- or disk-shaped titanium oxide particles, processes for production thereof and uses thereof A titanyl sulfate solution or a titanium tetrachloride solution is neutralized with an alkali to form orthotitanic acid, to which hydrochloric acid is added such as to adjust the TiO2 concentration to 80-140 g/L and the HCl concentration to 90-... | 08/08/2000 |
| 6001326 | Method for production of mono-dispersed and crystalline TiO2 ultrafine powders for aqueous TiOCl2 solution using homogeneous precipitation A method for production of mono-dispersed and crystalline titanium dioxide ultra fine powders comprises preparing an aqueous titanyl chloride solution, diluting the aqueous titanyl chloride solution to a concentration of between about 0.2 to 1.2 mole and ... | 12/14/1999 |
| 5922120 | Process for producing coated TiO2 pigment using cooxidation to provide hydrous oxide coatings The present invention provides a process for producing titanium dioxide (TiO2) pigment having a coating comprising silica and a second oxide selected from the group consisting of oxides of boron, phosphorus, magnesium, niobium, germanium, and m... | 07/13/1999 |
