| Patents for C22B 34 - Obtaining refractory metals (6,435) |
|---|
| 02/16/2005 | CN1580299A Method for purification and preparation of high-purity chromium using electro-plating chromium refuse |
| 02/15/2005 | US6855185 Reducing niobium and/or tantalum oxides with alkali metals and/or alkaline-earth metals to obtain low-grade oxide powder; electrolyte capacitors |
| 02/10/2005 | US20050028838 Cleaning tantalum-containing deposits from process chamber components |
| 02/10/2005 | US20050028643 Heating with reducing agents to reduce iron oxide to iron |
| 02/09/2005 | CN1576234A Process for producing niobium suboxide |
| 02/08/2005 | US6851896 Fluid barriers |
| 02/03/2005 | WO2005010238A1 Low temperature refining and formation of refractory metals |
| 02/03/2005 | WO2005010220A1 Highly pure hafnium material, target thin film comprising the same and method for producing highly pure hafnium |
| 02/03/2005 | US20050025687 Treatment of a wide range of titanium compounds |
| 02/03/2005 | DE10332033A1 Verfahren zur Herstellung von Metallpulvern, bzw. von Metallhydridpulvern der Elemente Ti, Zr, Hf, V, Nb, Ta und Cr A process for the production of metal powders, or Metallhydridpulvern of the elements Ti, Zr, Hf, V, Nb, Ta and Cr |
| 02/03/2005 | DE10329552A1 Production of an infiltration composite material made from titanium aluminide, titanium and aluminum comprises cleaning and crushing titanium (alloy) material and aluminum (alloy) material, and further processing |
| 02/03/2005 | CA2531003A1 Low temperature refining and formation of refractory metals |
| 02/02/2005 | CN1187460C Process to recover metal by alkaline leaching |
| 01/27/2005 | WO2005007906A1 Method for the production of metal powders or metal hydride powders of the elements ti, zr, hf, v, nb, ta and cr |
| 01/27/2005 | WO2005007903A1 A process for recovering platinum group metals from ores and concentrates |
| 01/27/2005 | US20050019581 Reacting NbOy ( y<1.8<2.1) with a stoichiometric amount of niobium metal, in the presence of hydrogen; reduce the consumption of high-purity magnesium; used to fabricate anodes for solid electrolyte capacitors |
| 01/27/2005 | US20050019247 Production of pure molybdenum oxide from low grade molybdenite concentrates |
| 01/27/2005 | US20050016854 Slip-casting a metal compound, sintering in air, vacum, or inert gas, and electrolytically reducing in molten salt forming a porous metal or alloy; then electrolytic reduction and infiltration of the pores; superconductors |
| 01/27/2005 | CA2532128A1 Method for the production of metal powders or metal hydride powders of the elements ti, zr, hf, v, nb, ta and cr |
| 01/26/2005 | EP1499752A2 Sulfuric acid beneficiation of titaniferous ore for the production of tio2 |
| 01/26/2005 | CN1571866A Method and apparatus for smelting titanium metal |
| 01/22/2005 | CA2435779A1 A process for recovering platinum group metals from ores and concentrates |
| 01/20/2005 | US20050012252 Cold hearth and skull for refining metals which seal together to prevent overflow of molten metal therebetween |
| 01/19/2005 | EP1274870B1 Ferroalloy production |
| 01/19/2005 | CN1185357C Method for processing steel slag |
| 01/18/2005 | US6843970 Process for recovering metal values by dissolving them in a sulfuric acid solution containing a carbon source and a reducing agent |
| 01/18/2005 | US6843831 Contacting flue gas with a carbonaceous material containing a solid carbonaceous residue of synthetic rutile production from titaniferrous ores |
| 01/13/2005 | WO2005002766A1 A method and apparatus for the production of metal compounds |
| 01/13/2005 | WO2004050955A3 Separation of metals |
| 01/13/2005 | CA2526483A1 A method and apparatus for the production of metal compounds |
| 01/12/2005 | EP1496130A1 High purity tantalum for producing sputter targets |
| 01/05/2005 | EP1493830A1 Smelt reduction method for processing slags and dusts from stainless steelmaking |
| 01/05/2005 | EP1492905A1 Reduction of metal oxides in an electrolytic cell |
| 12/30/2004 | US20040262232 Precipitating the molybdenum sulfide from a solution containing molybdenum and vanadium by using alkali metal alkyl xanthate while maintaining the pH acidic |
| 12/30/2004 | US20040262166 Low temperature refining and formation of refractory metals |
| 12/30/2004 | US20040261573 Reacting a halide with reducing agents in solid phase in fluidized bed |
| 12/29/2004 | WO2004113593A1 Electrochemical reduction of metal oxides |
| 12/29/2004 | WO2004113230A1 Extraction process for reactive metal oxides |
| 12/29/2004 | WO2004022269A3 Method and apparatus for controlling the size of powder produced by the armstrong process |
| 12/29/2004 | EP1257679B1 Electrolytic reduction of metal oxides such as titanium dioxide and process applications |
| 12/29/2004 | CN1557979A Technology for producing and reducing ilmenite using rotary kiln |
| 12/22/2004 | EP1489192A1 Electrolytic reduction of metal oxides such as titanium dioxide and process applications |
| 12/22/2004 | EP1488862A1 Wet method for treating petroleum originated combustion ash |
| 12/22/2004 | CN1180910C Niobium powder and method for producing niobium and/or tantalum powder |
| 12/21/2004 | US6833123 Contacting highly water soluble barium compounds with liquid waste containing chromate or other oxy-metal ions to form low water soluble barium/oxy-metal compounds which can be filtered out on precipitation |
| 12/21/2004 | US6833058 Titanium-based and zirconium-based mixed materials and sputtering targets |
| 12/15/2004 | EP1409410B1 Recovery of titanium from titanium bearing materials |
| 12/15/2004 | CN1555343A Recovery of titanium from titanium bearing materials |
| 12/15/2004 | CN1180101C Production of nitrogen-containing tantalum or niobium powder and solid electrolytic capacitor |
| 12/09/2004 | US20040247478 Reducing shaped titanium oxide bodies to titanium sponge in an electrolytic cell containing a molten electrolyte including cations of a metal that is capable of reducing titanium oxide (e.g., Ca cations); and reducing the volume of the bodies to form semi-finished or ready-to-use products |
| 12/09/2004 | US20040245681 Thermal treatment of the precursor material of a catalytically active material |
| 12/09/2004 | DE10323507A1 Verfahren zur Rückgewinnung von metallischen Elementen, insbesondere metallischem Chrom, aus metalloxidhaltigen Schlacken im Elektrolichtbogenofen Process for the recovery of metallic elements, particularly metallic chromium, from slags containing metal oxide in the electrical arc furnace |
| 12/08/2004 | EP1484284A1 Purification method for producing high purity niobium compound and/or tantalum compound |
| 12/08/2004 | EP1484283A1 Purification method for producing high purity niobium compound and/or tantalum compound |
| 12/08/2004 | EP1483431A1 Minimising carbon transfer in an electrolytic cell |
| 12/02/2004 | WO2004104518A1 Method for the analysis of gas produced by a titanium tetrachloride fluidized bed reactor |
| 12/02/2004 | WO2004104239A1 Beneficiation of titaniferous slags |
| 12/02/2004 | WO2004104233A1 Method for recovering metallic elements, especially metallic chromium, from slag containing metal oxides in an electric-arc furnace |
| 12/02/2004 | US20040237719 Recovery of titanium from titanium bearing materials |
| 12/02/2004 | US20040237711 Continuous thermal electrolytic reduction of titanium oxide using molten calcium chloride and calcium oxide; controlling dissolved oxygen concentration; low cost commercial production |
| 12/01/2004 | EP1481103A1 Method to reduce hydrosulphide and arsine emissions during wet ore processing |
| 11/30/2004 | US6824585 Converting the titanium ore to titanium tetrachloride, the latter continuously reduced to titanium metal in a plasma reactor in the presence of a metallic reductant under inert gas at atmospheric pressures |
| 11/25/2004 | WO2004101434A1 The metallurgical method of receiving the high purity silicon powder by chemical processing |
| 11/25/2004 | US20040235179 Determining the concentration and ratio of carbon monoxide to carbon dioxide in the gaseous product of a fluidized bed reactor for producing titanium tetrachloride using infrared analysis |
| 11/24/2004 | EP1479654A1 Method of purifying niobium compound and/or tantalum compound |
| 11/23/2004 | US6821500 Thermal synthesis apparatus and process |
| 11/23/2004 | CA2137812C Upgrading titaniferous materials |
| 11/18/2004 | WO2004099079A1 A method for producing an electrolytic solution containing vanadium |
| 11/18/2004 | WO2004052778A3 Plasma synthesis of metal oxide nanopowder and apparatus therefor |
| 11/17/2004 | EP1476402A2 Processes for treating iron-containing waste streams |
| 11/17/2004 | CN1176233C Method for purifying chromium |
| 11/17/2004 | CN1176230C Process for calcining molybdenum ore concentrate |
| 11/16/2004 | US6818191 Autoclave control mechanisms for pressure oxidation of molybdenite |
| 11/11/2004 | WO2004096707A1 Process for the treatment of waste metal chlorides |
| 11/11/2004 | WO2004026511A3 Method and apparatus for controlling the size of powder produced by the armstrong process |
| 11/09/2004 | US6814867 While eliminating the step of reducing hexavalent chromium to trivalent chromium |
| 11/04/2004 | WO2004095501A2 Molybdenum alloy x-ray targets having uniform grain structure |
| 11/04/2004 | WO2004094312A1 Method of purifying metal salt, method of deacidifying titanium material and method of producing the same |
| 11/04/2004 | US20040216559 Process for manufacturing ultra fine TiC-transition metal-based complex powder |
| 11/04/2004 | CA2522844A1 Molybdenum alloy x-ray targets having uniform grain structure |
| 11/03/2004 | CN2652567Y Uniform flow type double layer vessel for tungsten powder reduction |
| 11/03/2004 | CN1542148A Method for producing metallic chromium |
| 10/28/2004 | US20040213717 Process for separating and recovering valuable metals |
| 10/28/2004 | US20040213716 Tantalum Concentrates Dissolution and Purification Method |
| 10/27/2004 | CN1540010A Method for raising grade of titanium slag Ti02 |
| 10/21/2004 | WO2004090179A1 Method of recovering vanadium oxide flake from diesel oil fly-ash or orimulsion fly-ash |
| 10/21/2004 | WO2004029332A3 Purification of electrochemically deoxidised refractory metal particles by heat processing |
| 10/21/2004 | US20040208805 Thermal synthesis apparatus |
| 10/21/2004 | US20040208773 Method for preparing a metallic article having an other additive constituent, without any melting |
| 10/20/2004 | EP1468124A1 Reductive method for production of metallic elements such as chrome using a crucible with a perforated wall |
| 10/20/2004 | EP1468123A1 Method for production of metallic elements of high purity such as chromes |
| 10/20/2004 | CN1537958A Method of reduction roasting high iron ilmenite |
| 10/20/2004 | CN1172010C process for producing low-Ti High-C ferrochronium |
| 10/14/2004 | DE10297448T5 Verfahren zur Herstellung von Tantal- und/oder Niobpulvern mit hoher Oberflächenkennzahl A process for the production of tantalum and / or niobium powders having a high specific surface area |
| 10/13/2004 | EP1466038A1 Magnesium-zirconium alloying |
| 10/13/2004 | EP1137820B1 High purity tantalum and products containing the same like sputter targets |
| 10/12/2004 | US6803024 Benefication of titania slag by oxidation and reduction treatment |
| 10/07/2004 | US20040194574 Pouring molten material into electrochemical reactor, covering with electrolyte and deoxidizing; purity, low cost |
| 10/06/2004 | EP1102651B1 Purification process for chromium |
| 10/06/2004 | CN1535326A Methods of forming titanium-based and zirconium-based mixed-metal materials and sputtering targets |