| Patents for C22B 34 - Obtaining refractory metals (6,435) |
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| 04/23/2002 | US6375908 Waste gases are conveyed from the furnace through a multistage filter, liquid, paste-like and/or solid feed mixture is mixed with additives; feed mixture is blown together with oxidizing or reducing agent; subjected to chemical/thermal treatment |
| 04/23/2002 | CA2141406C Treatment of titaniferous materials |
| 04/18/2002 | US20020044908 Method for liquid chromate ion and oxy-metal ions removal and stabilization |
| 04/11/2002 | WO2002029125A1 High purity zirconium or hafnium, sputtering target comprising the high purity zirconium or hafnium and thin film formed using the target, and method for producing high purity zirconium or hafnium and method for producing powder of high purity zirconium or hafnium |
| 04/11/2002 | US20020041819 Low oxygen refractory metal powder for powder metallurgy |
| 04/10/2002 | EP1194597A1 Method for recovering metallic chromium from slag containing chromium oxide |
| 04/10/2002 | EP1007750A4 Titanium alloy based dispersion-strengthened composites |
| 04/10/2002 | CN1343795A V2O3 electro-aluminothermic process for semelting FeV50 |
| 04/10/2002 | CN1343794A V2O3 electro-aluminothermic process for smelting FeV |
| 04/10/2002 | CN1082550C Method of making tantalum metal powder with controlled size distribution and products made therefrom |
| 04/04/2002 | WO2001079571A3 Tio2 compounds obtained from a high silica content ore |
| 04/03/2002 | EP1193318A1 Method for recycling of articles consisting of thorium-tungsten |
| 03/28/2002 | WO2002024575A1 Method of forming nanograin tungsten carbide and recycling tungsten carbide |
| 03/26/2002 | CA2077453C Process for removing inorganic gels and incompressible solids from acid media |
| 03/21/2002 | WO2002023651A1 A method for recycling spent lithium metal polymer rechargeable batteries and related materials |
| 03/21/2002 | WO2002022895A1 Method for producing metal or metal compound comprising process of treating with fluorine and adjusted raw material used therein |
| 03/19/2002 | US6358625 Refractory metals with improved adhesion strength |
| 03/19/2002 | US6358484 Process for recovery of zirconium basic sulfate |
| 03/14/2002 | WO2002020408A1 Method for separating metals such as zirconium and hafnium |
| 03/14/2002 | WO2002020403A1 Ultracoarse, monorystalline tungsten carbide and method for producing the same, and hard metal produced therefrom |
| 03/14/2002 | DE10043792A1 Ultragrobes, einkristallines Wolframkarbid und Verfahren zu dessen Herstellung; Ultra-coarse, single-crystalline tungsten carbide, and process for its production; und daraus hergestelltes Hartmetall and it produced carbide |
| 03/13/2002 | CA2319285A1 A method for neutralizing and recycling spent lithium metal polymer rechargeable batteries |
| 03/07/2002 | US20020026965 For producing components of sputtering targets, capacitor cans, resistive film layers, wire |
| 03/06/2002 | CN1080319C Tantalum powder without metals and fluorine and alkali |
| 02/28/2002 | US20020025283 Process and apparatus for recovery of raw materials from wastes residues |
| 02/19/2002 | US6349107 Method of magnetically-controllable, electroslag melting of titanium and titanium-based alloys, and apparatus for carrying out same |
| 02/19/2002 | US6348113 High purity tantalum, products containing the same, and methods of making the same |
| 02/14/2002 | WO2002011932A1 Method for producing tantalum powder, tantalum powder and tantalum electrolytic capacitor |
| 02/12/2002 | US6346223 Process for the production of titanium concentrate from anatase ores with high utilization of the iron contents of the ore |
| 02/07/2002 | WO2002010068A1 Production of metal oxides |
| 01/31/2002 | US20020011290 Uniformity of tensile strength; tantalum is the predominant metal present. |
| 01/30/2002 | CN1333838A High purity tantalum and products containing the same like sputter targets |
| 01/24/2002 | WO2001045906A3 Production of metals and their alloys |
| 01/17/2002 | US20020005090 Reduction using liquid alkaline or alkaline earth metal |
| 01/16/2002 | CN1331760A Method for extracting anions of IVB to VIII metals using alkyl-substituted 1,3-diaminopropanes |
| 01/09/2002 | EP1060219B1 PROCESS AND FURNACE FOR THE PRODUCTION OF TiO2 PIGMENT ACCORDING TO THE SULFATE PROCESS |
| 01/08/2002 | US6337061 Solvent extraction of titanium, diffusive dialysis |
| 01/08/2002 | US6336967 Method for processing chromium oxide-containing substances in large quantities, method for utilizing the processed substances, and products comprising the processed substances |
| 01/03/2002 | WO2002103064A1 Method for producing granular metal |
| 01/03/2002 | WO2002000948A1 Method for producing refractory metals from a concentrate of laporite |
| 01/03/2002 | US20020000138 Tacna-type ore, ground and slurried with water and separating agents; not subject to chloride or sulfate process; may be used as feedstock for said processes |
| 01/02/2002 | EP1165846A1 Endothermic heat treatment of solids loaded on trolleys moving in a kiln |
| 01/02/2002 | CN1077143C Method for lowering oxygen content in value metal materials |
| 12/26/2001 | CN1076759C Method for making metals and other elements |
| 12/20/2001 | WO2001096620A2 High purity niobium and products containing the same, and methods of making the same |
| 12/20/2001 | WO2001041151A3 Nuclear fuel dissolution |
| 12/20/2001 | US20010052272 Production of high titania slag from ilmenite |
| 12/19/2001 | EP1163704A1 Metal sponges for rapid surface-chemical reactions |
| 12/13/2001 | WO2001094009A1 Method for preparing catalyst for use in hydro-refining and method for recovering metal |
| 12/13/2001 | US20010051121 Process for treating alumina-bearing ores to recover metal values therefrom |
| 12/13/2001 | US20010051120 Process for the production titanium concentrate having a chemical composition similar to ilmenite from highly impure anatase ores |
| 12/13/2001 | US20010049981 Continuous single stage process for the production of molybdenum metal |
| 12/12/2001 | EP1162281A1 Continous single stage process for the production of molybdenum metal |
| 12/11/2001 | US6328938 Treating ore with chlorine and other reagents to form titanium dioxide and a by-product stream comprised of metal chlorides; treating by-product with aqueous sodium hydroxide to form slurry; supplying slurry to cavity; decomposition |
| 12/11/2001 | CA2042200C Method for control of process conditions in a continuous alloy production process |
| 12/05/2001 | EP1159460A1 Filter-press type electrochemical cell |
| 12/05/2001 | EP0979314B1 Process and device for recovering raw materials from waste and residues |
| 11/27/2001 | US6323055 Purifying k2taf7; reducing the purified ktaf7 to produce tantalum powder, refining the tantalum by reacting with iodine and finally electron beam melting the tantalum to form a high purity tantalum ingot. |
| 11/21/2001 | CN1075121C Process and apparatus for recovering metal raw material from wastes and residues |
| 11/15/2001 | WO2001085307A1 Process for the purification of flue gas |
| 11/15/2001 | WO2001062996A9 Electrolytic reduction of metal oxides such as titanium dioxide and process applications |
| 11/15/2001 | WO2000049188A9 Refining of tantalum and tantalum scrap with carbon |
| 11/15/2001 | US20010039852 Refining crude niobium in an electrolyte consisting of a melt of a complex niobium and potassium fluoride and mixture of alkali metal chlorides, and sodium fluoride, electrolysis to deposit niobium at cathode, electron beam melting the depsoit |
| 11/14/2001 | EP1152855A1 Method and device for moulding titanium parts |
| 11/14/2001 | CN1322157A Low oxygen refractory metal powder for powder metallurgy |
| 11/08/2001 | WO2001083837A1 Titanium alloy and method of manufacture |
| 11/07/2001 | EP1015648B1 Hard material titanium carbide based alloy, method for the production and use thereof |
| 11/06/2001 | US6312642 Method for controlling the oxygen content in valve metal materials |
| 11/01/2001 | WO2001081029A1 Niobium powder, sintered compact thereof and capacitor |
| 10/31/2001 | CN1320168A Apparatus and method of producing tantalum by continuous process |
| 10/31/2001 | CN1074050C Pretreatment method for extracting vanadium pentoxide from vanadium-contained ore |
| 10/25/2001 | WO2001079572A1 Ferroalloy production |
| 10/25/2001 | WO2001079571A2 Tio2 compounds obtained from a high silica content ore |
| 10/23/2001 | US6306356 Slurrying natural bitumen ash with water, adding oxidizing agent and sulfuric acid; agitating, heating, separating and removing solid phase of undissolved ash and insoluble vanadium values from liquid phase containing nickel and magnesium |
| 10/23/2001 | CA2028487C Improved method for beneficiating titanium bearing material containing iron |
| 10/17/2001 | EP1144699A1 Method for extracting anions of ivb to viii metals using alkyl-substituted 1,3-diaminopropanes |
| 10/11/2001 | WO2001075185A1 Process for recovery of zirconium basic sulfate |
| 10/11/2001 | WO2001042520A8 Method of high-temperature digesting titanium containing material with sulfuric acid |
| 10/11/2001 | WO2000023628A9 Low cost high speed titanium and its alloy production |
| 10/11/2001 | DE10112822A1 Method of high-purity niobium production |
| 10/10/2001 | CN1072730C Recovery process of waste cobalt-molybdenum catalyst |
| 10/04/2001 | WO2001072456A1 Method for manufacturing metal parts |
| 10/04/2001 | EP1137820A1 High purity tantalum and products containing the same like sputter targets |
| 10/04/2001 | EP0964937B1 Tantalum powder, method for producing same powder and sintered anodes obtained from it |
| 10/04/2001 | EP0964936B1 Tantalum powder, method for producing same powder and sintered anodes obtained from it |
| 10/04/2001 | EP0874915B1 Method for separating titanium and vanadium from pig iron |
| 09/30/2001 | CA2303558A1 Process for recovery of zirconium basic sulfate |
| 09/27/2001 | DE10014403A1 Process for the powder metallurgy production of metal bodies comprises mixing a metal compound powder such as oxide powder with a rheology-improving additive, removing the additive; and reducing the metal compound using a reducing gas |
| 09/26/2001 | EP1135537A1 Treating niobium and/or tantalum containing raw materials |
| 09/18/2001 | CA2047359C Chromatographic separation of zirconium isotopes with reduced waste liquor |
| 09/13/2001 | WO2001066809A1 Chromium-containing metal and method for producing the same |
| 09/12/2001 | EP1132488A1 Installation with cooled crystallisers and method for operating the installation |
| 09/05/2001 | EP1090153A4 Tantalum sputtering target and method of manufacture |
| 09/05/2001 | CN1311723A Purification process for chromium |
| 09/04/2001 | US6284214 Low or no slag molten metal processing of coke containing vanadium and sulfur |
| 08/30/2001 | WO2001062996A1 Electrolytic reduction of metal oxides such as titanium dioxide and process applications |
| 08/30/2001 | WO2001062995A1 Method for the manufacture of metal foams by electrolytic reduction of porous oxidic preforms |
| 08/30/2001 | WO2001062994A1 Method of manufacture for ferro-titanium and other metal alloys electrolytic reduction |
| 08/30/2001 | CA2401034A1 Electrolytic reduction of metal oxides such as titanium dioxide and process applications |
| 08/23/2001 | US20010016182 Process for controlling the passivation of aluminum chloride formed in the chlorination of titanium-containing ores |