| Patents for C01G 41 - Compounds of tungsten (1,848) |
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| 07/07/1998 | US5776424 Two powder synthesis of hydrotalcite and hydrotalcite-like compounds with monovalen inorganic anions |
| 07/07/1998 | US5776264 Method for producing amorphous based metals |
| 06/30/1998 | US5772978 Process for producing tungsten oxide |
| 06/25/1998 | WO1998019351A3 Nanostructured ion conducting solid electrolytes |
| 06/04/1998 | WO1998023796A1 Method for preparation of metal intercalated fullerene-like metal chalcogenides |
| 05/26/1998 | US5756410 Method for making submicrometer transition metal carbonitrides |
| 05/12/1998 | US5750020 Cyclic, fluidized catalytic-cracking of hydrocarbon feedstock including oxides of nitrogen and sulfur, converting nitrogen oxide in regeneration zone by exposing gas stream to a catalyst bed of microcrystalline mixed oxides |
| 05/07/1998 | WO1998019351A2 Nanostructured ion conducting solid electrolytes |
| 04/21/1998 | US5741540 Method of forming solid state humidity sensor |
| 04/01/1998 | EP0832041A1 Sodium tungstate preparation process |
| 04/01/1998 | EP0832040A1 Process for producing pure ammonium metallates |
| 03/24/1998 | US5730951 Two powder synthesis of hydrotalcite and hydrotalcite-like compounds with polyvalent inorganic anions |
| 03/17/1998 | US5728366 Two powder synthesis of hydrotalcite and hydrotalcite-like compounds with monovalent organic anions |
| 03/17/1998 | US5728365 Reacting divalent metal compound and trivalent metal oxide powder in aqueous suspension to form double hydroxide, contacting with acid or salt of divalent inorganic anion to form intercalated layered double hydroxide, separating |
| 03/17/1998 | US5728364 Two powder synthesis of hydrotalcite and hydrotalcite like compounds |
| 03/17/1998 | US5728363 React trivalent metal oxide powder with divalent metal compound and react intermediate formed with anion source, separation |
| 03/12/1998 | WO1998009753A1 Integrated thermal process and apparatus for the continuous synthesis of nanoscale powders |
| 03/12/1998 | CA2263902A1 Integrated thermal process and apparatus for the continuous synthesis of nanoscale powders |
| 02/04/1998 | EP0656873B1 PROCESS FOR THE PREPARATION OF RHENIUM-188 AND TECHNETIUM-99m GENERATORS |
| 01/22/1998 | DE19628816A1 Ammonium para-tungstate production in good yield without neutralising excess soda and acidification |
| 01/15/1998 | WO1998001393A1 Process for preparing pure alkali and/or ammonium tungstate solutions |
| 01/15/1998 | DE19628357A1 Production of nanocrystalline metal sulphide or (sulpho)selenide |
| 01/15/1998 | CA2259461A1 Process for preparing pure alkali and/or ammonium tungstate solutions |
| 01/14/1998 | CN1036978C Preparation of tungsten bullet of gene gun for transferring external gene |
| 01/08/1998 | DE19724183A1 Production of pure alkali metal or ammonium tungstate solutions |
| 11/27/1997 | WO1997044278A1 Bulk synthesis of inorganic fullerene-like structures of metal chalcogenides |
| 11/26/1997 | EP0808227A1 Method for the reduction of metallic compounds |
| 11/19/1997 | CN1165380A Ferroelectric element and method of producing the same |
| 11/12/1997 | EP0806396A1 Process for the preparation of metal disulfides and further processing thereof to dimetal trisulfides |
| 11/05/1997 | EP0804962A1 Process for the production of mixed oxides powders from deactivated catalysts for the reduction of the NOx concentration in a gas stream |
| 10/30/1997 | WO1997039980A1 Process for producing tungsten oxide |
| 10/22/1997 | CN1162949A Vanadium dioxide microparticles, method for preparing same, and use thereof, in particular for surface coating |
| 10/15/1997 | EP0800883A2 Method for producing amorphous based metals |
| 10/14/1997 | US5676817 Three stage purification; ph reduction, anion exchange and membrane electrolysis |
| 10/12/1997 | CA2190422A1 Method for producing amorphous based metals |
| 10/01/1997 | CN1160773A Tungsten-copper composite powder |
| 09/17/1997 | EP0795898A2 Ferroelectric element and method of producing the same |
| 09/10/1997 | EP0793555A1 Method of preparing powders for hard materials from cobalt salts and soluble tungstate salts |
| 08/27/1997 | EP0790959A1 Vanadium dioxide microparticles, method for preparing same, and use thereof, in particular for surface coating |
| 07/02/1997 | CN1153079A Multimetal oxides |
| 06/25/1997 | EP0780488A1 Preconditioning process for treating deposition chamber prior to deposition of tungsten silicide coating on active substrates therein |
| 06/04/1997 | EP0776317A1 Two powder synthesis of hydrotalcite and hydrotalcite-like compounds |
| 05/27/1997 | US5632824 Complexing |
| 05/27/1997 | US5632382 Heavy liquid for material separations |
| 05/21/1997 | EP0774315A2 Tungsten-copper composite powder |
| 05/21/1997 | EP0774297A1 Multi-metal oxides |
| 05/17/1997 | CA2190171A1 Multimetal oxides |
| 05/09/1997 | WO1997016275A1 Method for the reduction of metallic compounds |
| 03/25/1997 | US5613998 Reclamation process for tungsten carbide and tungsten-based materials |
| 03/19/1997 | EP0762930A1 Absorbent and process for removing sulfur oxides from a gaseous mixture |
| 03/05/1997 | EP0759888A1 Synthetic meixnerite product and method |
| 02/05/1997 | EP0756718A1 Electrochromic thin-film systems and components thereof |
| 02/05/1997 | EP0756578A1 Novel method for preparing an oxide, particularly a transition metal oxide |
| 02/05/1997 | CN1033990C Metal-oxide super-conductive composition and mfg. method and usage thereof |
| 02/04/1997 | US5599514 Treating reaction liquors with alkaline earth metal hydroxide, treating precipitate formed with mineral acid to dissolve cobalt salt, separating tungstic acid |
| 01/07/1997 | US5591418 Process for removing sulfur oxides or nitrogen oxides from a gaseous mixture |
| 12/27/1996 | WO1996041768A1 Sodium tungstate preparation process |
| 12/27/1996 | WO1996041767A1 Process for producing pure ammonium metallates |
| 12/27/1996 | CA2224268A1 Process for producing pure ammonium metallates |
| 12/27/1996 | CA2224254A1 Sodium tungstate preparation process |
| 12/19/1996 | DE19521332A1 Verfahren zur Herstellung reiner Ammoniummetallate Process for the preparation of pure ammonium metallates |
| 12/05/1996 | DE19521333C1 Verfahren zur Herstellung von Natriumwolframat Process for the preparation of sodium tungstate |
| 11/27/1996 | EP0744380A1 Reclamation process for tungsten carbide and tungsten-based materials |
| 11/26/1996 | US5578286 Reacting magnesium compound and alumina to form meixnerite intermediate; reacting with di- or polycarboxylate |
| 11/26/1996 | US5578285 Process for reducing the average particle size of ammonium paratungstate powders |
| 11/24/1996 | CA2176179A1 Reclamation process for tungsten carbide and tungsten-based materials |
| 10/30/1996 | CN1134472A Process for production of pure solutions of tungsten and molybdenum |
| 10/23/1996 | CN1133820A Composite oxide having oxygen absorbing and desorbing capability and method for preparing same |
| 10/16/1996 | CN1133265A Sorting method of recovering black-white tungsten ore from complex multi-metal ore |
| 10/16/1996 | CN1133202A Composite oxide with ability of oxygen absorption and desorption |
| 10/15/1996 | US5565382 Process for forming tungsten silicide on semiconductor wafer using dichlorosilane gas |
| 10/09/1996 | EP0736055A1 Catalysts for polyester production |
| 09/05/1996 | DE19607356A1 Potassium-doped tungsten wire esp. for incandescent lamp filament |
| 09/05/1996 | DE19607355A1 Potassium-doped tungsten wire esp. for incandescent lamp filament |
| 08/22/1996 | WO1996025359A1 Novel method for preparing an oxide, particularly a transition metal oxide |
| 08/13/1996 | US5545598 Consists of atleast one of molybdenum and tungsten and 1 or more weight percent ceramic; used for integrated circuits |
| 07/31/1996 | EP0710152A4 Modified solid oxide catalyst and process for producing same |
| 07/10/1996 | EP0721017A1 Process for preparing pure solutions of tungsten and molybdenum |
| 07/04/1996 | CA2166368A1 Process for the production of pure solutions of tungsten and molybdenum |
| 06/19/1996 | CN1124718A Process for preparing superfine scale crystal tungsten disulfide |
| 05/23/1996 | WO1996015068A1 Vanadium dioxide microparticles, method for preparing same, and use thereof, in particular for surface coating |
| 05/23/1996 | WO1996014952A1 Method of preparing powders for hard materials from cobalt salts and soluble tungstate salts |
| 05/23/1996 | CA2204910A1 Vanadium dioxide microparticles, method for preparing same, and use thereof, in particular for surface coating |
| 05/08/1996 | EP0710152A1 Modified solid oxide catalyst and process for producing same |
| 05/07/1996 | US5514361 Magnesium aluminum hydroxide hydrates, reduced carbonate contamination |
| 05/07/1996 | US5514360 Negative thermal expansion materials |
| 05/01/1996 | EP0709351A1 Composite oxide having oxygen absorbing and desorbing capability |
| 04/17/1996 | EP0706980A1 Composite oxide having oxygen absorbing and desorbing capability and method for preparing same |
| 04/04/1996 | WO1995028663A3 Electrochromic thin-film systems and components thereof |
| 04/03/1996 | CN1119627A Metal tungstates and method of preparing them and their use |
| 02/29/1996 | DE19500057C1 Environmentally friendly prodn. of pure tungstate and molybdate soln. |
| 02/22/1996 | WO1996005140A1 Two powder synthesis of hydrotalcite and hydrotalcite-like compounds |
| 02/14/1996 | EP0587672B1 Method of producing nanometer-sized oxide particles |
| 12/26/1995 | US5478539 Solvent extraction by complexing the metal oxyanion with a benzimidazole |
| 12/07/1995 | WO1995032797A1 Absorbent and process for removing sulfur oxides from a gaseous mixture |
| 11/28/1995 | US5470549 Method of making tungsten-copper composite oxides |
| 11/21/1995 | US5468457 Reaction of copper oxide and tungsten oxide with milling and dehydration for composite |
| 11/09/1995 | WO1995029874A1 Synthetic meixnerite product and method |
| 11/09/1995 | CA2189020A1 Synthetic meixnerite product and method |
| 10/26/1995 | WO1995028663A2 Electrochromic thin-film systems and components thereof |