| Patents for C01G 41 - Compounds of tungsten (1,848) |
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| 10/24/1995 | US5460738 Modified stannic oxide-zirconium oxide composite sol and process for preparing the same |
| 10/19/1995 | DE4419575C1 Metal tungstate for prodn. of lead perovskite electro-ceramics and X=ray improving luminescent materials |
| 10/19/1995 | DE4413403A1 Elektrochrome Dünnschichtsysteme und deren Komponenten Electrochromic thin-film systems and their components |
| 10/10/1995 | CA1337243C Process for the recovery of metal values from an aqueous solution using imidazoles of a selected formula |
| 09/13/1995 | CN1108217A Method for prepn. of tungsten bullet of gene gun for transfering external gene |
| 09/06/1995 | CN1029678C Purifying method of sodium turgstate |
| 08/30/1995 | EP0341266B1 Superconductivity in square-planar compound systems |
| 08/09/1995 | EP0666108A1 Process for recovering and re-using cobalt and tungsten from reaction liquors |
| 08/09/1995 | EP0656873A4 PROCESS FOR THE PREPARATION OF RHENIUM-188 AND TECHNETIUM-99m GENERATORS. |
| 08/08/1995 | CA2141892A1 Process for recovering and re-using cobalt and tungsten from reaction liquors |
| 06/29/1995 | WO1995017447A1 Catalysts for polyester production |
| 06/27/1995 | US5427763 Evaporative decomposition of a vanadyl sulfate hydrate spray entrained in a nitrogen gas stream and pyrolysis to produce very pure, quality, nonagglomerated VO2 and molybdenum or tungsten-doped VO2 |
| 06/20/1995 | US5426083 Anionic layered mixed hydroxide clay |
| 06/14/1995 | EP0656873A1 PROCESS FOR THE PREPARATION OF RHENIUM-188 AND TECHNETIUM-99m GENERATORS |
| 05/23/1995 | US5417945 Process for recovering tungsten as an ammoniacal tungstate compound in which ammoniacal tungstate liquors are reclaimed |
| 04/12/1995 | EP0647728A1 Process and apparatus for forming tungsten silicide |
| 03/09/1995 | DE4329907A1 Multimetal oxide compositions containing at least the elements antimony and phosphorus and additionally at least one of the two elements Mo, W |
| 02/23/1995 | DE4425045A1 Method for the recovery of the tungsten content and other metal contents from articles containing tungsten |
| 02/02/1995 | WO1995003121A1 Modified solid oxide catalyst and process for producing same |
| 02/02/1995 | DE4325108A1 Process for producing ultrafine oxidic particles |
| 01/17/1995 | US5382650 Catalytic polymerization using molybdenum or tungsten sulfide with alkali metal cation intercalation compounds with alcohols or polyols |
| 01/17/1995 | US5382388 Process for the preparation of rhenium-188 and technetium-99m generators |
| 11/02/1994 | EP0454688B1 Process for producing tungsten monocarbide |
| 10/26/1994 | CN1093906A Antiviral agents |
| 10/25/1994 | CA1332667C Process for producing tungsten monocarbide |
| 09/20/1994 | US5348920 θ-alumina powder, preparation thereof and magnetic recording medium |
| 09/20/1994 | US5348723 Synthesis of semiconductor grade tungsten hexafluoride |
| 07/12/1994 | US5328668 Synthesis of semiconductor grade tungsten hexafluoride |
| 07/12/1994 | US5328035 Separating minerals |
| 06/28/1994 | US5324498 Purification of tungsten hexafluoride |
| 06/09/1994 | WO1994012192A1 Antiviral agents |
| 05/17/1994 | CA1329486C Process for recovery of rare metals |
| 03/31/1994 | WO1994004463A3 Process for the preparation of rhenium-188 and technetium-99m generators |
| 03/30/1994 | CN1084576A Extraction of high-quality ammonium para-tungstate from tungsten slurry and hard-to-dress tungsten material |
| 03/30/1994 | CN1084575A Process for preparation of pure ammonium turgstate by ion-exchange one-stage separation of phosphorus, arsenic, silicon and molybdenum |
| 03/23/1994 | EP0587672A1 Method of producing nanometer-sized oxide particles. |
| 03/03/1994 | WO1994004463A2 PROCESS FOR THE PREPARATION OF RHENIUM-188 AND TECHNETIUM-99m GENERATORS |
| 02/15/1994 | US5286520 Preparation of fluorine-doped tungstic oxide |
| 02/09/1994 | EP0582386A1 Modified stannic oxide-zirconium oxide composite sol and process for preparing the same |
| 12/28/1993 | US5273732 Hexagonal crystal structure of MWO2F4 where M is barium, strontium or lead |
| 11/02/1993 | US5258365 CrTlSrCaCuO and related superconducting systems |
| 10/14/1993 | WO1993019849A1 Heavy liquid for material separations |
| 09/22/1993 | CN1076493A Extraction of ammonium para-tungstate and tin dioxide by use of tungsten-tin paragenetic ore wet process |
| 08/10/1993 | US5234679 Reducing to molybdenum trifluoride |
| 07/21/1993 | CN1074421A Method of purifying sodium tungstate solution |
| 07/20/1993 | US5229101 Containing lead and niobium |
| 06/16/1993 | EP0546669A1 Preparation of fluorine-doped tungstic oxide and glass coating process |
| 06/14/1993 | CA2085025A1 Preparation of fluorine-doped tungstic oxide |
| 05/25/1993 | US5213777 Extraction of uranium values using an imidazole extractant |
| 04/14/1993 | EP0536224A1 Antiviral agents containing heteropolytungstate |
| 03/09/1993 | CA1314128C Method for preparing gaseous metallic fluoride |
| 02/23/1993 | US5188667 Tungstic oxide-stannic oxide composite sol and method of preparing the same |
| 02/16/1993 | US5186748 Process for the preparation of bismuth vanadate pigments, and novel bismuth vanadate pigments of high color strength |
| 01/12/1993 | US5178848 From lithium monotungstate, high density, low viscosity |
| 12/10/1992 | DE4118185A1 Verfahren zur herstellung nanoskaliger oxidteilchen Process for the preparation of nanoscale oxide particles |
| 12/09/1992 | EP0516944A1 Method of refining tungsten hexafluoride |
| 11/24/1992 | CA2069266A1 Layer-type transition metal dichalcogenide with house-of-cards structure |
| 11/17/1992 | US5164171 Removal of carbonate from caustic sulfide solution |
| 10/12/1992 | WO1992021611A1 Method of producing nanometer-sized oxide particles |
| 08/19/1992 | EP0454688A4 Process for producing tungsten monocarbide |
| 07/01/1992 | EP0211084B1 Cell with solid electrolyte |
| 06/30/1992 | US5125964 Fluidized bed process for preparing tungsten powder |
| 06/02/1992 | CA1302383C Transition metal dichalcogenide catalysts |
| 05/13/1992 | EP0288556B1 Rhenium generator system and method for its preparation and use |
| 04/14/1992 | US5105053 Catalytic oxidative dehydrogenation of light hydrocarbons to form heavier hydrocarbons |
| 04/01/1992 | EP0477450A1 Method for recovery of tungsten from spent catalysts |
| 04/01/1992 | CN1059856A Fluidized bed process for preparing tungsten powder |
| 03/10/1992 | US5094691 Refractive index |
| 02/26/1992 | CN1015618B Prepn. of pure seconderary ammonium tungstate by ion-exchange method |
| 12/30/1991 | WO1992000078A1 Antiviral agents containing heteropolytungstate |
| 12/30/1991 | CA2086263A1 Antiviral agents containing heteropolytungstate |
| 12/17/1991 | US5073645 Cvd-compatible tungsten halogen phosphine complex compounds and methods for the production thereof |
| 12/17/1991 | US5073360 Bridge/lamellar metallic oxides |
| 11/06/1991 | EP0454688A1 Process for producing tungsten monocarbide. |
| 10/08/1991 | US5055441 Spray-freezing solution of molybdic acid or mixture with tungstic acid, freeze drying, heating |
| 08/14/1991 | EP0441101A1 Phosphate modified bismuth vanadate pigments |
| 07/31/1991 | CN1013358B Production of ammonium tungstate from fine tungsten mud |
| 07/23/1991 | US5034246 Method for forming tungsten oxide films |
| 06/26/1991 | EP0433450A1 Method of obtaining complex oxides |
| 06/05/1991 | EP0430888A1 Process for preparing bismuth vanadate pigments and bismuth vanadate pigments of high tinting strength |
| 06/04/1991 | US5021133 Decomposing tungsten carbide in solution of ammonium hydroxide and ammonium chloride, ammonium carbonate or ammonium sulfate; crystallization |
| 05/14/1991 | US5015461 Hydrorefining catalysts of niobium, tantalum and a divalent metal |
| 04/09/1991 | CA1282574C Forms of transition metal dichalcogenides |
| 03/19/1991 | CA1281552C Further improvements in tungsten recovery |
| 03/12/1991 | US4999169 Method for separating tungsten from molybednum |
| 02/26/1991 | US4996108 Sheets of transition metal dichalcogenides |
| 02/12/1991 | CA1279994C Tungsten recovery |
| 01/09/1991 | CN1011137B Removal of molybdenum from sodium tungstate solution by active carbon adsorption process |
| 01/02/1991 | EP0405891A2 High surface area oxide compositions and their use in the conversion of light hydrocarbons |
| 12/26/1990 | CA2018515A1 High surface area oxide compositions with a pyrochlore structure, methods for their preparation and, conversion processes utilizing same |
| 12/04/1990 | US4975167 Process for production of pure tungstic acid or molybdic acid from impure alkali metal tungstate or molybdate solutions |
| 11/20/1990 | CA1276431C Inorganic compounds based on bismuth vanadate |
| 10/17/1990 | CN1010003B Method for preparation of ammonium paratungstate or sodium tungstate with high molybdenum removing efficiency |
| 10/16/1990 | US4964016 Group 1a, 2a, yttrium, or lanthanides and a transition metal in a cationic lattice |
| 10/16/1990 | US4963336 Purification of APT |
| 10/10/1990 | CN1045958A Prepn. of pure seconderary ammonium tungstate by ion-exchange method |
| 10/09/1990 | US4961910 As oxides; digestion with hydrochloric acid or sulfuric acid |
| 10/04/1990 | WO1990011249A1 Method of obtaining complex oxides |
| 10/02/1990 | US4960581 Reacting metal or metal oxide with fluorine gas or nitrogen trifluoride; solid metal fluoride as molding auxiliary |
| 08/16/1990 | EP0382339A1 Sheets of transition metal dichalcogenides |