| Patents for C01B 33 - Silicon; Compounds thereof (28,579) |
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| 08/13/1991 | CA1287472C Method for producing a flaky material |
| 08/13/1991 | CA1287471C Modified close fraction batch process for purification of sio |
| 08/07/1991 | CN1053625A Alkoxy-functional silane composition for unprimed adhesion to polycarbonate |
| 08/07/1991 | CN1013436B Cordierite precursor preperation |
| 08/07/1991 | CA2035444A1 Synthesis of kenyaite-type layered silicate material and pillaring of said material |
| 08/06/1991 | US5037911 Addition polymerization using a catalyst which is activated by heating |
| 08/06/1991 | US5037625 Surface pretreatment; heating with hydrogen chloride gas, diffusing interstitial alkali metal oxide inpurities to surface, removing as salts |
| 08/06/1991 | CA1287285C Method for flocculating suspensions containing swelled layered chalcogenide |
| 08/06/1991 | CA1287202C Process for surface treating clay minerals and resultant products |
| 07/31/1991 | EP0439293A1 Alkoxy-functional silane compositions for unprimed adhesion to polycarbonate |
| 07/31/1991 | EP0131586B1 Process and apparatus for obtaining silicon from fluosilicic acid |
| 07/30/1991 | US5035879 Amorphous and having specific abrasion value, pore diameter, refractive indexion, and oil absorption; transparent toothpaste |
| 07/27/1991 | WO1991011258A1 New zeolite ssz-31 |
| 07/27/1991 | CA2049035A1 Zeolite ssz-31 |
| 07/26/1991 | WO1991011389A1 Method of production of high purity fusible silica |
| 07/26/1991 | CA2074518A1 Method of production of high purity fusible silica |
| 07/25/1991 | WO1991010629A1 Process for using dross residues to produce refractory products |
| 07/25/1991 | DE4001247A1 Improving free-flowing properties of dimerised 2,4-TDI - by adding 0.01-10 wt. per cent pptd. or pyrogenic silica with hydrophobic surface |
| 07/25/1991 | CA2033960A1 Alkoxy-functional silane compositions for unprimed adhesion to polycarbonate |
| 07/24/1991 | EP0437996A1 Method for preparation of refractory metal oxides based on silica using sol-gel in aqueous medium |
| 07/24/1991 | EP0437429A1 Synthetic crystalline molecular sieve and its synthesis |
| 07/24/1991 | CN1013248B Method of treating by silicopyrohydrolysis worn linings from hall-heroult electrolysis tanks |
| 07/23/1991 | US5034208 Process for preparing amorphous silicon |
| 07/23/1991 | US5034207 Finely, divided, precipitated silica with high structure, method of its preparation and use |
| 07/17/1991 | EP0437331A1 Dry powder mixes comprising phase change materials |
| 07/17/1991 | EP0436835A2 Method for preparation of crystalline sodium silicates |
| 07/17/1991 | CN1053044A Method for prepn. of pptd. hydrated silicon dioxide |
| 07/17/1991 | CN1053015A Closed system for discharging residue from direct synthesis of organic chlorosilane |
| 07/17/1991 | CN1013200B Alumina treated by silicon and/or fluorine |
| 07/16/1991 | US5032556 Preparation method for zircon powder |
| 07/13/1991 | CA2032670A1 Process for the preparation of crystalline sodium silicates |
| 07/09/1991 | US5030608 Process for the preparation of composite materials which contain small particles of metal or metal oxide in an oxide matrix and the composite materials prepared by the process |
| 07/09/1991 | US5030433 Agglomeration, heating to volatilize impurities |
| 07/09/1991 | US5030286 High solids aqueous silica slurry |
| 07/09/1991 | CA1285928C Process for producing amorphous aluminosilicates |
| 07/03/1991 | EP0435513A1 Silica particles and process for producing the same |
| 07/03/1991 | EP0215121B1 Process for purification of solid material |
| 07/03/1991 | CN1052645A Precess for preparation of alkali metal silicates |
| 07/02/1991 | US5028407 Ammoniation of ammonium fluosilicate |
| 07/02/1991 | US5028360 Method of manufacturing spherical silica particles |
| 07/02/1991 | US5028352 Low density/low surface area silica-alumina composition |
| 07/02/1991 | US5028351 Intercalated Organic Amine Salts, Pyridine Salts Or (Meth)acrylamide Polymers; Thickeners, Protective Colloids, Dispersants, Binders |
| 07/02/1991 | US5028270 Production of refractory molds, precision casting, dentistry |
| 07/02/1991 | US5028267 Aqueous dispersion of microsilica having a delayed thixotropic reaction |
| 07/02/1991 | US5028247 Process for the preparation of silica glass powders |
| 06/27/1991 | DE4041901A1 Pyrolytic prodn. of poly:silicon rod - on starter filament held by protectively coated graphite holder |
| 06/26/1991 | EP0434309A1 High density cordierite ceramic articles formed from specified zeolites |
| 06/26/1991 | EP0434306A1 Process for the production of record material |
| 06/26/1991 | EP0433915A1 Method of forming metal oxide film by using metal alkoxide solution |
| 06/26/1991 | EP0433600A2 Method for waste water free working up of residues from a chlorosilane distillation with calcium bases or calcium carbonate |
| 06/26/1991 | CN1052464A Process for preparing molecular sieve of layered crosslinking clay column |
| 06/25/1991 | US5026533 Boiling reaction solution; reduced distillation time |
| 06/25/1991 | US5026527 Pressure release valve on receiving vessel controlled by means of signal from flow meter which measures flow rate of reaction products flowing from autoclave to receiver to maintain constant flow rate |
| 06/25/1991 | CA1285116C Silica with a high oil absorption capability and a controlled primary structure and process for the production thereof |
| 06/20/1991 | WO1991008988A1 Sol-gel process for glass and ceramic articles |
| 06/20/1991 | DE3941827A1 Chloro-silane distn. residue conversion to solid suitable for dumping - by treatment with excess calcium base and sepn., liquor being recycled |
| 06/19/1991 | CN1052294A Producing technology for commercial active silicic acid coagulant aid |
| 06/18/1991 | US5024826 Silica particulate composition |
| 06/17/1991 | CA2032286A1 Process for the production of record material |
| 06/13/1991 | WO1991008171A1 Process for the hydrothermal production of crystalline sodium disilicate |
| 06/13/1991 | WO1991008170A1 Process for the hydrothermal production of potassium silicate solutions. |
| 06/13/1991 | WO1991008168A1 Process for producing reactive silicon dioxide phases |
| 06/12/1991 | EP0431404A2 Formation of titanium, magnesium and zirconium calcium oxides |
| 06/12/1991 | CN1052096A Process for preparing compact cast synthetic mica |
| 06/12/1991 | CN1052095A Process for preparing modified wollastonite powder |
| 06/11/1991 | US5023208 Reacting ingredients in mold, hydrothermal aging, drying to in crease pore size of gel matrix |
| 06/11/1991 | US5023065 Synthetic mica powder, manufacturing method thereof and cosmetics having the synthetic mica powder blended therein |
| 06/06/1991 | DE4038388A1 Crystalline sodium di:silicate prodn. - by hydrothermal prodn. from quartz sand or amorphous sodium di:silicate |
| 06/05/1991 | EP0430685A2 Process for production of a highly pure silicic acid aqueous solution |
| 06/05/1991 | CN1051897A Process for preparation of solution of potassium silicate by hydrothermal method |
| 06/04/1991 | US5021368 Novel ceramic-metal compounds |
| 06/04/1991 | US5021221 Apparatus for producing high purity silicon from flames of sodium and silicon tetrachloride |
| 05/30/1991 | WO1991007349A1 Process for forming highly uniform silica spheres |
| 05/29/1991 | EP0428576A1 Removal of coarse particles from aluminosilicate aqueous suspensions by wet grinding |
| 05/29/1991 | DE3938730A1 Verfahren zur herstellung von reaktiven siliziumdioxid-phasen The method of producing reactive silicon dioxide phases |
| 05/29/1991 | CN1051709A Silica sols, process for production of silica sols and use of sols |
| 05/28/1991 | US5019364 Method for purifying gaseous hydrides |
| 05/28/1991 | US5019360 Magnetic separation, extraction, precipitation |
| 05/28/1991 | CA1284418C Process for manufacturing a product suitable for producing pure quartz glass as well as a process for producing pure quartz glass from this product and use of this product for growing piezoelectric crystals |
| 05/28/1991 | CA1284406C Suspensions of sheet silicate materials and products made therefrom |
| 05/24/1991 | WO1991008169A1 Method for producing alkali metal silicates |
| 05/24/1991 | CA2069477A1 Method for producing alkali metal silicates |
| 05/23/1991 | DE4037021A1 Silicon prod. used in mfr. of organo:silane(s) and chloro:silane(s) - comprises intermetallic phase of silicon, iron aluminium and opt. calcium mixed with silicon to improve conversion |
| 05/22/1991 | EP0428410A2 Process for producing ammonium silicofluoride or silica |
| 05/22/1991 | EP0290602B1 Process for surface treating clay minerals and resultant products |
| 05/21/1991 | US5017537 Intercalating An Amine, Displacing With An Inorganic Pillaring Substance In Zirconium Or Titanium Phosphates |
| 05/21/1991 | US5017525 Organometallic or other polymer |
| 05/21/1991 | US5017354 Process for production of high purity silica gel |
| 05/21/1991 | US5017308 Microcrystalline grains interspersed in amorphous phase dopes |
| 05/21/1991 | CA1284397C Gels, gel products and methods |
| 05/16/1991 | WO1991006507A1 Core wire connecting bridge for polycrystalline silicon manufacturing apparatuses |
| 05/15/1991 | CN1051338A Prodn. of aluminium silicate fibre by directly using clay ore as raw material |
| 05/14/1991 | US5015453 Crystalline group IVA metal-containing molecular sieve compositions |
| 05/14/1991 | CA1284015C Synthetic lamellar magnesium phyllosilicate and process for preparation thereof |
| 05/10/1991 | WO1991007351A1 Silica sols, a process for the production of silica sols and use of the sols |
| 05/09/1991 | WO1991007350A1 Silica sols, a process for the production of silica sols and use of the sols |
| 05/08/1991 | EP0426255A2 Organophilic clay and process for preparing it |
| 05/08/1991 | EP0425668A1 Method and reactor for obtaining powdered refractory material |
| 05/08/1991 | EP0143848B1 Silica base for dentifrice and process for its preparation |
| 05/08/1991 | EP0139754B1 Silica base for dentrifrice and process for its preparation |