| Patents for C01G 41 - Compounds of tungsten (1,848) |
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| 03/14/2001 | CN1287577A Micronic pre-alloyed metal powder based on three dimensional transition metal |
| 03/14/2001 | CN1287576A Metal powders based on tungsten and/or molybdenum and three-dimension metals |
| 03/06/2001 | US6198119 Ferroelectric element and method of producing the same |
| 02/20/2001 | US6190508 Method of oxidizing nitride material enhanced by illumination with UV light at room temperature |
| 02/14/2001 | EP1037940A4 Block polymer processing for mesostructured inorganic oxide materials |
| 02/07/2001 | EP1073518A1 Multi-metal oxide compounds |
| 02/06/2001 | US6184173 Multimetal oxides containing molybdenum, vanadium and one of tungsten, niobium, titanium, zirconium, hafnium, tantalum, chromium, silicon and germanium and having three dimensional atomic arrangement are used in oxidation catalysts |
| 02/06/2001 | US6183716 Solution method for making molybdate and tungstate negative thermal expansion materials and compounds made by the method |
| 01/31/2001 | CN1281823A Method for producing ultrapure tungsten hexafluoride |
| 01/24/2001 | EP1070680A1 Method for making UHP tungsten hexafluoride |
| 01/22/2001 | CA2314385A1 Method for making uhp tungsten hexafluoride |
| 01/17/2001 | CN1060819C Process for production of pure solutions of tungsten and molybdenum |
| 01/09/2001 | US6171571 Crystalline multinary metal oxide compositions, process for preparing and processes for using the composition |
| 11/15/2000 | CN1058469C Vanadium dioxide microparticles, method for preparing same, and use for surface coating |
| 11/09/2000 | WO2000066485A1 Bulk synthesis of long nanotubes of transition metal chalcogenides |
| 10/11/2000 | EP1042523A1 Micronic pre-alloyed metal powder based on three-dimensional transition metal |
| 10/11/2000 | EP1042520A1 Metal powders based on tungsten and/or molybdenum and three-dimension metals |
| 09/27/2000 | EP1037940A1 Block polymer processing for mesostructured inorganic oxide materials |
| 09/20/2000 | CN1267236A Method for producing multi-metal oxide masses contg. Mo, V and Cu |
| 09/19/2000 | CA2133832C Heavy liquid for material separations |
| 09/13/2000 | CN1266022A Process for treating ammonium para-tungstate crystal mother solution |
| 09/05/2000 | US6113868 Process for treating tungstate solutions to reduce molybdenum impurity and other impurity content |
| 08/24/2000 | WO2000007194A9 Preparation of tungsten bronzes for nuclear waste storage forms and electronic materials |
| 08/24/2000 | DE19859683C1 Verfahren zur Extraktion von Anionen A process for extraction of anions |
| 08/15/2000 | US6103392 Tungsten-copper composite powder comprising individual particles having a tungsten phase and a copper phase wherein the tungsten phase encapsulates the copper phase; useful for forming a copper-tungsten pseudoalloy |
| 08/15/2000 | US6103212 Method for making UHP tungsten hexafluoride |
| 08/08/2000 | CA2197664C Two powder synthesis of hydrotalcite and hydrotalcite-like compounds |
| 08/02/2000 | CN1055033C Sorting method of recovering black-white tungsten ore from complex multi-metal ore |
| 07/26/2000 | CN1054829C Metal tungstates and method of preparing them and their use |
| 07/20/2000 | WO2000007194A8 Preparation of tungsten bronzes for nuclear waste storage forms and electronic materials |
| 07/12/2000 | EP0762930B1 Absorbent and process for removing sulfur oxides from a gaseous mixture |
| 07/06/2000 | WO2000039350A1 Method for extracting anions of ivb to viii metals using alkyl-substituted 1,3-diaminopropanes |
| 07/06/2000 | CA2355853A1 Method of extracting anions of metals of groups ivb to viii by means of alkyl-substituted 1,3-diaminoprpopanes |
| 07/04/2000 | US6084126 Oxidation using multimetal molybdenum and vanadium oxides |
| 06/29/2000 | WO2000037361A1 Synthesis of heteropolyacids |
| 06/14/2000 | CN1256245A Elimination of molybdenum from tungstate soltuion |
| 06/07/2000 | EP1005394A1 Method for producing multi-metal oxide masses containing mo, v and cu |
| 05/03/2000 | CN1251825A Process for preparing thiomolybdate by separating tungsten from molybdenum |
| 04/27/2000 | WO2000023631A1 Micronic pre-alloyed metal powder based on three-dimensional transition metal |
| 04/27/2000 | WO2000023630A1 Metal powders based on tungsten and/or molybdenum and three-dimension metals |
| 04/27/2000 | CA2315347A1 Micronic pre-alloyed metal powder based on three-dimensional transition metal |
| 04/27/2000 | CA2315346A1 Metal powders based on tungsten and/or molybdenum and three-dimension metals |
| 04/18/2000 | US6051196 Purification of phosphorus containing scheelite ore |
| 04/12/2000 | EP0808227B1 Method for the reduction of metallic compounds |
| 04/11/2000 | CA2141868C Process for the preparation of rhenium-188 and technetium-99m generators |
| 03/30/2000 | WO2000017106A1 Solid-state gas sensors and compounds therefor |
| 03/30/2000 | CA2339863A1 Solid-state gas sensors and compounds therefor |
| 03/22/2000 | CN1248233A Method for making submicrometer transition metal carbonitrides |
| 03/15/2000 | EP0759888B1 Process for the preparation of layered double hydroxides. |
| 03/02/2000 | WO1999037705A9 Block polymer processing for mesostructured inorganic oxide materials |
| 02/23/2000 | CN1245540A Method for preparation of metal intercalated fullerene-like metal chalcogenides |
| 02/10/2000 | WO2000007194A1 Preparation of tungsten bronzes for nuclear waste storage forms and electronic materials |
| 01/26/2000 | EP0793555B1 Method of preparing powders for hard materials from cobalt salts and soluble tungstate salts |
| 12/21/1999 | US6005705 Electrochromic thin-film systems and components thereof |
| 12/15/1999 | EP0963359A1 Method for making submicrometer transition metal carbonitrides |
| 11/30/1999 | US5993756 By the oxidation of hard metal scrap and/or heavy metal scrap in a molten salt mixture of hydroxide |
| 11/16/1999 | US5984997 Forming liquid emulsion comprising precursor elements and combustible fuel, combusting emulsion, collecting powder formed |
| 11/03/1999 | EP0776317B1 Two powder synthesis of hydrotalcite and hydrotalcite-like compounds |
| 11/02/1999 | US5976217 Method for the reduction of metallic compounds |
| 10/14/1999 | WO1999051343A1 Multi-metal oxide compounds |
| 10/13/1999 | EP0948671A1 Method for preparation of metal intercalated fullerene-like metal chalcogenides |
| 10/07/1999 | DE19815281A1 Multimetalloxidmassen Multimetal |
| 09/22/1999 | EP0710152B1 Process for producing a modified oxide catalyst |
| 09/21/1999 | US5956560 Tungsten-copper composite powder |
| 08/25/1999 | EP0756578B1 Novel method for preparing an oxide, particularly a transition metal oxide |
| 08/17/1999 | CA2003351C Method of preparing heteropolyacid catalysts |
| 08/04/1999 | CN1225075A Process for preparing pure alkali and/or ammonium tungstate solutions |
| 08/03/1999 | US5932184 Digesting with aqueous naoh; mole ratio of waer sufficient to dissolve the produced sodium tungstate |
| 07/29/1999 | WO1999037705A1 Block polymer processing for mesostructured inorganic oxide materials |
| 06/22/1999 | US5914293 Absorbent and process for removing sulfur oxides from a gaseous mixture |
| 06/15/1999 | US5911965 Process for producing tungsten oxide |
| 05/18/1999 | US5905000 Nanostructured ion conducting solid electrolytes |
| 04/28/1999 | CN1215026A Process for preparing metatungstic acid solution |
| 04/13/1999 | US5894016 Reacting the mixture of tin, a second metal or metal sulfide with a superstoichiometric quantity of solid phase sulfur with ammonium or tin chloride as an exothermic reaction to form mixed sulfide or tin sulfide in pressureless condition |
| 04/06/1999 | US5891407 Process for producing pure ammonium metallates |
| 03/17/1999 | CN1210894A Producing pure tungsten compound using tungsten-containing material |
| 02/25/1999 | WO1999008788A1 Method for producing multi-metal oxide masses containing mo, v and cu |
| 02/25/1999 | DE19736105A1 Multi-metal oxide catalyst for gas-phase oxidation of acrolein |
| 02/25/1999 | CA2301704A1 Method for producing multi-metal oxide masses containing mo, v and cu |
| 02/24/1999 | EP0736055B1 Process and catalysts for polyester production |
| 02/23/1999 | US5874056 Metal tungstates and method of preparing them and their use |
| 02/16/1999 | US5872073 Reduced ternary molybdenum and tungsten sulfides and hydroprocessing catalysis therewith |
| 02/10/1999 | EP0895508A1 Process for producing tungsten oxide |
| 01/07/1999 | EP0889006A1 Process for the recuparation of doped tungsten |
| 01/05/1999 | US5855862 Process for the preparation of an oxide, especially a transition metal oxide |
| 12/22/1998 | US5851507 Integrated thermal process for the continuous synthesis of nanoscale powders |
| 12/02/1998 | EP0881307A1 Reclamation of tungsten values from tungsten-thoria scrap by sodium hydroxide fusion |
| 12/02/1998 | CN1200351A Single crystals of lead tungstate |
| 11/24/1998 | US5842108 Spray drying metal salts, desalting, dehydrating, milling metal oxide powder, forming into green body, sintering to produce oxide for use as alloy precursor |
| 11/17/1998 | US5837635 Process for producing mixed oxide powders from deactivated denox catalysts |
| 10/06/1998 | US5819158 Sodium tungstate |
| 09/15/1998 | US5807531 Oxidation catalyst |
| 09/03/1998 | WO1998038141A1 Method for making submicrometer transition metal carbonitrides |
| 08/18/1998 | US5795366 Method of manufacturing a non-sag tungsten wire for electric lamps |
| 08/04/1998 | US5788938 Roasting, oxidation; digestion with sodium hydroxide to formsodium tungstate |
| 08/04/1998 | US5788738 High temperature vapors quenched by adiabatic expansion |
| 07/28/1998 | US5785731 Process of making a non-sag tungsten wire for electric lamps |
| 07/15/1998 | CN1187802A Process for producing pure ammonium metallates |
| 07/15/1998 | CN1187801A Sodium tungstate preparation process |
| 07/14/1998 | US5780382 Method for preparing a modified solid oxide |