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| Number | Title | Issue Date |
| 7494636 | Highly dispersible fine hydrophobic silica powder and process for producing the same A high dispersible hydrophobic fine silica powder can be made, wherein the silica powder has hydrophobicity of more than 50%, triboelectrostatic charge of more than −500 μC/g, decomposition rate of an organic group on the powder surface of less than 15%, transmit... | 02/24/2009 |
| 7255843 | Low viscosity-increment fumed-silica and its slurry A fumed-silica, which can make a slurry having sufficient wettability to a polar liquid, excellent dispersibility, and low viscosity even in the high concentration, and a slurry thereof. A fumed-silica and its slurry are provided, wherein the water content is contro... | 08/14/2007 |
| 7192461 | High concentration silica slurry A high concentration silica slurry can be used for polishing of substrates, such as semiconductor materials. The slurry contains a silica powder dispersed in an solvent. The silica slurry has a silica concentration of more than 50% by weight and a viscosity of less ... | 03/20/2007 |
| 7109256 | Surface-modified inorganic oxide powder, process for producing the same, and use thereof A surface modified inorganic oxide powder is provided, which includes inorganic oxide particles having a surface modified with a mixed solution, which includes an organopoly-siloxane and a silane compound, in the presence of an acid or a base. ... | 09/19/2006 |
| 7083770 | Amorphous, fine silica particles, and method for their production and their use The amorphous-silica particle having 0.1–0.7 μm of the average particle diameter, 5–30 m2/g of the specific surface area, less than 40% of the dispersion coefficient, and 20 μC/m2 of the absolute value of the triboelectrostatic charge, ca... | 08/01/2006 |
| 6994834 | Surface-modified fine silica powder and use thereof A surface modified fine silica powder which has been treated, preferably, with a treating agent containing an amino group, characterized in that the powder exhibits an adsorption amount for an anion source compound of 150% or more of that of an original powder which... | 02/07/2006 |
| 6759451 | Surface-modified inorganic oxide powder, process for producing the same, and use thereof A surface modified inorganic oxide powder is provided, which includes inorganic oxide particles having a surface modified with a mixed solution, which includes an organopoly-siloxane and a silane compound, in the presence of an acid or a base. ... | 07/06/2004 |
| 6677095 | Fine metal oxide powder having high dispersibility and toner composition comprising the same Regarding the metal oxide fine powder, which is used as the additive of a powder material and is hydrophobic treated on the surface, the peak of the particle size distribution of the agglomerated particle is made to be less than the same level of average ... | 01/13/2004 |
| 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 |
| 6573018 | Surface-treated metallic-oxide fine powder, and its production and use The tribo-electro static charge is stabilized by treating the surface of the metallic-oxide fine powders such as a silica powder, using the mixed solution which consists of a specific silane coupling agent containing primary amino group, other silane coup... | 06/03/2003 |
| 6352679 | Ultrafine particle silicon dioxide and process for producing the same An ultrafine particle silicon dioxide which comprises silicon dioxide powders in the range of ultrafine particles having a BET specific surface area of 350 m2 /g or more and has a ratio of BET/CTAB specific surface areas of 0.6 to 1.1, a number... | 03/05/2002 |
| 6224980 | Fine powder of hydrophobic titanium oxide, and method for producing it A fine powder of hydrophobic titanium oxide, which, when added to toner powder, gives it high flowability and good electrification stability. The titanium oxide is prepared by hydrolyzing a volatile titanium compound while in a high-temperature vapor-phas... | 05/01/2001 |
| 6077640 | Fine powder of hydrophobic metal oxide, method for producing it, and toner composition for electrophotography A fine powder of a hydrophobic metal oxide is provided which is produced through surface treatment of fine powder of a metal oxide with an epoxy compound and an alkylsilazane or ammonia thereby ring-opening the epoxy groups in the surface of the fine powd... | 06/20/2000 |
| 5843525 | Surface-modified metal oxide fine particles and process for producing the same By treating metal oxide fine particles having a specific surface area of 5 to 500 m2 /g with a silane coupling agent and then further treating the fine particles with a reactive group-terminated organopolysiloxane, the organopolysiloxane is sta... | 12/01/1998 |
| 4424198 | Process for preparing trichlorosilane and silicon tetrachloride from silicon and hydrogen chloride An agitated bed operation in production of trichlorosilane and silicon tetrachloride from metallic silicon or metallic-silicon-containing solid materials and hydrogen chloride is disclosed. In the new agitated bed operation in a tower type reactor, defect... | 01/03/1984 |
