| Patents for C22B 34 - Obtaining refractory metals (6,435) |
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| 11/14/2002 | WO2002089944A1 Production of pure molybdenum oxide from low grade molybdenite concentrates |
| 11/14/2002 | US20020168310 Process for upgrading a titaniferous material containing silica |
| 11/14/2002 | US20020168309 Method for recovering catalytic metals |
| 11/13/2002 | EP1255872A1 Production of nitrogen-containing tantalum or niobium powder and solid electrolytic capacitor |
| 11/07/2002 | WO2002088412A2 Tantalum and niobium billets and methods of producing the same |
| 11/06/2002 | CN1378604A Method for producing metal or metal compound comprising process of treating with fluorine and adjusted raw material used therein |
| 11/05/2002 | US6475428 Method of producing titanium powder |
| 10/31/2002 | US20020157806 Process for producing vanadium alloy foil |
| 10/31/2002 | US20020157736 Extruding a tantalum and/or niobium ingot at a sufficient temperature and for a sufficient time to at least partially recrystallize the tantalum and/or niobium billet during extrusion |
| 10/31/2002 | US20020157582 Furnace and a method of controlling a furnace |
| 10/30/2002 | CN1376803A Recovery method for catalytic metal |
| 10/24/2002 | WO2002083960A1 Method for separating zirconium and hafnium tetrachloride with the aid of a melted solvent |
| 10/24/2002 | US20020155017 Loading crushed hydrided titanium powder as a layer onto a tray; heating the crushed hydrided titanium powder; slowly heating over a period of between about four and five days under a partial vacuum to dehydride; cooling; packaging |
| 10/24/2002 | US20020152844 Introducing the halide vapor or mixtures thereof into a continuum of a liquid alkali metal or a liquid alkaline earth metal or mixtures thereof to convert the halide vapor to elemental material or an alloy |
| 10/24/2002 | US20020152842 Nitrogen-containing metal powder, production process thereof, and porous sintered body and solid electrolytic cpacitor using the metal powder |
| 10/24/2002 | CA2412622A1 Method for separating hafnium and zirconium tetrachlorides |
| 10/23/2002 | CN1093019C Method for producing tantalum powder |
| 10/22/2002 | US6468483 Process for treating alumina-bearing ores to recover metal values therefrom |
| 10/17/2002 | US20020148327 Metal halides are contacted with stream of liquid alkali metal/mixture; for production of titanium; passivation |
| 10/09/2002 | EP1247872A1 Method for producing metal sputtering target |
| 10/09/2002 | CN2515206Y Double-pot type metal zirconium reduction device |
| 10/09/2002 | CN1092242C Method for smelting ferro-niobium by two-step reduction in electric furnace |
| 10/09/2002 | CN1092240C Titanium alloy based dispersion-strengthened composites |
| 10/02/2002 | EP1245685A1 Method for producing metal or metal compound comprising process of treating with fluorine and adjusted raw material used therein |
| 09/25/2002 | EP1152855B1 Method and device for moulding titanium parts |
| 09/24/2002 | USRE37853 Fast quench reactor and method |
| 09/19/2002 | WO2002072899A2 Method for recovering zirconium values from a hard rock ore containing zircon and uranium |
| 09/19/2002 | WO2002072898A1 Method for processing fluorinated and titaniferous solutions after opening loparite and titaniferous concentrates in order to obtain titanium dioxide |
| 09/19/2002 | WO2002072205A2 Method for increasing the dry residue in wet-processed cyclone dust of the chlorination of titanium ore |
| 09/19/2002 | US20020132388 Tantalum sputtering target and method of manufacture |
| 09/19/2002 | DE10111895A1 Verfahren zur Erhöhung des Trockenrückstandes bei aufgearbeitetem Zyklonstaub A method for increasing the dry residue at reclaimed cyclone dust |
| 09/19/2002 | CA2439768A1 Method for recovering zirconium values from a hard rock ore containing zircon and uranium |
| 09/18/2002 | EP1240646A2 Nuclear fuel dissolution |
| 09/12/2002 | WO2002070760A1 A furnace and a method of controlling a furnace |
| 09/12/2002 | WO2002070759A1 Method and apparatus for the production of titanium |
| 09/12/2002 | WO2002052051A3 Methods of melting titanium and other metals and alloys by plasma arc or electron beam |
| 09/11/2002 | CN1368744A Sintered anode |
| 09/10/2002 | US6447738 Leaching with sulfuric acid, reducing any ferric values to ferrous, crystallizing formed double salts, washing, hydrolyzing, washing, drying, calcining |
| 09/06/2002 | WO2002068331A1 Process for treating red mud to recover metal values therefrom |
| 08/29/2002 | WO2002066711A1 Extraction of metals |
| 08/29/2002 | WO2002066693A1 Porous metals and metal coatings for implants |
| 08/29/2002 | US20020119068 Low cost feedstock for titanium casting, extrusion and forging |
| 08/29/2002 | CA2438801A1 Porous metals and metal coatings for implants |
| 08/29/2002 | CA2438523A1 Extraction of metals |
| 08/27/2002 | US6440377 Neutralization of the waste acid with a calcium compound subject to precipitation; production of gypsum and also of an iron oxide pigment |
| 08/22/2002 | WO2002064846A1 Silicate binders including calcium bearing curing agent |
| 08/22/2002 | US20020112968 Production of high purity vanadium compound from vanadium-containing carbonaceous residues |
| 08/21/2002 | CN1089374C Process for separating titanium component from titanium-contained slags |
| 08/15/2002 | WO2002040725A3 Metal and alloy powders and powder fabrication |
| 08/15/2002 | US20020110514 Method for recovering titanium compound, process for preparing titanium halide, and process for preparing catalyst for polymer production |
| 08/13/2002 | US6432161 Nitrogen-containing metal powder, production process thereof, and porous sintered body and solid electrolytic capacitor using the metal powder |
| 08/13/2002 | CA2162742C Process for increasing the yield in the manufacture of titanium dixoide by the chloride process |
| 08/08/2002 | WO2002061168A2 Methods of forming sputtering targets |
| 08/08/2002 | WO2002061158A1 Fluidized bed chloride method for obtaining metal oxide concentrate, especially titanium dioxide |
| 08/08/2002 | WO2001096620A3 High purity niobium and products containing the same, and methods of making the same |
| 08/08/2002 | US20020104406 By removal of impurities contained in the material especially radionuclides; heating to form a solid titaniferous phase and a liquid oxide or glassy phase in the presence of a promoter, cooling and leaching |
| 08/07/2002 | CN1088761C Tantalum powder, method for producing same powder and sintered anodes obtained from it |
| 07/24/2002 | EP1224972A1 A method for recovering catalytic metals from a colloidal solution |
| 07/24/2002 | EP0799899B1 Chromium ore smelting reduction process |
| 07/24/2002 | CN1360068A Process for producing low-Ti high-C ferrochronium |
| 07/23/2002 | US6423291 Titanium tetrachloride production |
| 07/11/2002 | DE10103977C1 Titanium dioxide concentrate recovery, for use in production of rutile and pigments, by contacting ore containing titanium and iron with carbon in fluidized bed in presence of chlorine and oxygen |
| 07/09/2002 | US6416251 Process for the stabilization of soluble chromium contaminated solid by down draft sintering |
| 07/04/2002 | WO2002052051A2 Methods of melting titanium and other metals and alloys by plasma arc or electron beam |
| 07/04/2002 | WO2002052050A1 Method for loparite concentrate processing |
| 07/04/2002 | WO2002042505A8 Method for loparite concentrate processing |
| 07/03/2002 | EP1218553A1 Purification hearth |
| 07/03/2002 | CN1357055A Method for receiving metallic chromium from slag contg. chromium oxide |
| 07/03/2002 | CN1356332A Process for recovering titanianc compound and process for preparing titanium halide and polymerizing catalyst |
| 07/02/2002 | CA2289967C Methods for separation of titanium from ore |
| 06/27/2002 | WO2002049964A1 Production of synthetic rutile by continuous leaching |
| 06/27/2002 | US20020078794 Ultra-coarse, monocrystalline tungsten carbide and a process for the preparation thereof, and hardmetal produced therefrom |
| 06/26/2002 | EP1217083A2 Production of synthetic rutile |
| 06/26/2002 | EP1064223B1 METHOD FOR REPROCESSING WASTE ACID RESULTING FROM TiO2 PRODUCTION |
| 06/25/2002 | US6409797 Method of making metals and other elements from the halide vapor of the metal |
| 06/25/2002 | US6409793 Method for processing steel slags containing chromium |
| 06/20/2002 | WO2002048412A1 Recovery of titanium dioxide from titanium oxide bearing materials like steelmaking slags |
| 06/20/2002 | US20020075629 Niobium powder, sintered body using the powder, and capacitor using the same |
| 06/20/2002 | US20020073804 Oxidizing the objects of thoriated tungsten to form thorium-containing or thorium-oxide-containing tungsten oxide pieces, homogenizing tungsten oxide pieces, and reducing homogenized tungsten oxide pieces under hydrogen gas |
| 06/20/2002 | CA2431257A1 Recovery of titanium dioxide from titanium oxide bearing materials like steelmaking slags |
| 06/18/2002 | US6406512 Method for producing high-purity niobium |
| 06/13/2002 | US20020072475 High purity niobium and products containing the same, and methods of making the same |
| 06/04/2002 | US6400025 Highly purified titanium material, method for preparation of it and sputtering target using it |
| 06/04/2002 | US6399033 Single stage separation of cyclone dust in a hydrocyclone; drying; grinding; no silica contamination and resulting quartz accumulation |
| 05/30/2002 | WO2002042505A1 Method for loparite concentrate processing |
| 05/29/2002 | CN1351182A Continuous one-step process for preparing metal molybdenium |
| 05/29/2002 | CN1085737C Process for preparing Ti-enriched material from ilmenite concentrate |
| 05/28/2002 | US6395241 Process for recovering the carbide metal from metal carbide scrap |
| 05/28/2002 | US6395045 Metal carbides, nitrides and borides, carbon reduced by smelting in arc or plasma furnace |
| 05/28/2002 | CA2059938C Nozzle assembly design for a continuous alloy production process and method for making said nozzle |
| 05/23/2002 | WO2002040748A1 Intermetallic compounds |
| 05/23/2002 | WO2002040725A2 Metal and alloy powders and powder fabrication |
| 05/23/2002 | CA2429024A1 Metal and alloy powders and powder fabrication |
| 05/21/2002 | CA2233143C Process for preparing titanium dioxide |
| 05/10/2002 | WO2002036839A1 Method and installation of metal retrieving from used chroming solutions |
| 05/10/2002 | WO2002036495A1 Process for recovering the carbide metal from metal carbide scrap |
| 05/02/2002 | US20020050229 Method for processing chromium oxide-containing substances in large quantities, method for utilizing the processed substances, and products comprising the processed substances |
| 05/02/2002 | US20020050185 Tantalum powder for capacitors characterized in that, a specific surface area SB as determined by the BET method is 1.3 m2/g or more, and SB/SF ratio between specific surface area SB and SF determined by Fischer Subsieve Sizer is 4-10 |
| 05/02/2002 | EP1200353A1 A process for controlling the passivation of aluminum chloride formed in the chlorination of titanium-containing ores |
| 05/02/2002 | EP1200218A1 Low oxygen refractory metal powder for powder metallurgy |