| Patents for C22B 34 - Obtaining refractory metals (6,435) |
|---|
| 04/28/2004 | EP1413635A1 Method for reducing Cr(VI) in chromium oxide-containing waste materials |
| 04/28/2004 | EP1413354A1 Thermal synthesis apparatus and method |
| 04/28/2004 | CN1492942A Tantalum and niobium billets and methods of producing the same |
| 04/28/2004 | CN1491740A Device and method for heat synthesis |
| 04/22/2004 | WO2004033760A2 Electrochemical reduction of metal oxides |
| 04/22/2004 | WO2004033748A2 Method to recover spent components of a sputter target |
| 04/22/2004 | WO2004033737A1 System and method of producing metals and alloys |
| 04/22/2004 | WO2004033736A1 System and method of producing metals and alloys |
| 04/22/2004 | US20040076578 Comprises tubular reactor with continuous serpentine path; comprises pretreated feedstock including ilmenite, leueoxene, or titania slag leached with hot hydrochloric acid |
| 04/21/2004 | EP1409770A1 Reduction of metal oxides in an electrolytic cell |
| 04/21/2004 | EP1409410A1 Recovery of titanium from titanium bearing materials |
| 04/14/2004 | EP1200218A4 Low oxygen refractory metal powder for powder metallurgy |
| 04/14/2004 | CN1489635A Fluidized bed chloride method for obtaining metal oxide concentrate, expecially titanium dioxide ERE |
| 04/08/2004 | WO2004033730A1 Method for producing titanium oxide containing slag |
| 04/08/2004 | WO2004029332A2 Purification of electrochemically deoxidised refractory metal particles by heat processing |
| 04/08/2004 | WO2004029309A1 Improved process for removing oxygen from metal oxides by electrolysis in a fused salt |
| 04/08/2004 | WO2004028655A2 Filter cake treatment method |
| 04/08/2004 | US20040067155 Consumable electrodes; cold molding into cylindrical briquets; sealing capsules; pressurization; deformation |
| 04/08/2004 | US20040067152 Mixing metal particles with binder; compaction; removal binder with reducing gas; powder metallurgy |
| 04/08/2004 | US20040065546 Method to recover spent components of a sputter target |
| 04/07/2004 | EP1405924A1 Method for producing granular metal |
| 04/01/2004 | WO2004026511A2 Method and apparatus for controlling the size of powder produced by the armstrong process |
| 04/01/2004 | US20040060826 Process for removing oxygen from metal oxides by electrolysis in a fused salt |
| 03/30/2004 | US6713038 TiO2 compounds obtained from a high silica content ore |
| 03/30/2004 | US6712952 Placing anode and electrode comprising solid compound in contact with fused salt electrolyte, applying voltage so potential is lower than deposition potential for salt cation at electrode surface and substance dissolves in electrolyte |
| 03/25/2004 | WO2004024995A1 Porous sintered compact of titanium oxide for production of metallic titanium through direct electrolytic process and process for producing the same |
| 03/25/2004 | WO2004024963A2 Methods of making elemental materials and alloys |
| 03/25/2004 | WO2004024656A2 Process for reducing chromium in nonvolatile residue resulting from air oxidation of cyclohexane |
| 03/25/2004 | US20040055733 Method and apparatus for melting titanium using a combination of plasma torches and direct arc electrodes |
| 03/25/2004 | CA2498563A1 Porous sintered compact of titanium oxide for production of metallic titanium through direct electrolytic process and process for producing the same |
| 03/24/2004 | CN1484556A Wet methd for treaving petroleum-originated combustion ash |
| 03/24/2004 | CN1483844A Method for smelting ferro-tungsten by using scheelite preparation concentrate |
| 03/24/2004 | CN1483843A Method for producing high titanium iron |
| 03/24/2004 | CN1143002C Method for extracting anions of IVB to VIII metals using alkyl-substituted 1,3-diaminopropanes |
| 03/23/2004 | US6709641 Using dialkyl-substituted 1,3-diaminopropanes; high loading capacity |
| 03/18/2004 | WO2004022800A1 Process for separating ti from a ti slurry |
| 03/18/2004 | WO2004022799A1 Safety mechanism |
| 03/18/2004 | WO2004022798A1 Screw device for transfer of ti-containing reaction slurry into a vacuum vessel |
| 03/18/2004 | WO2004022797A1 Preparation of alloys by the armstrong method |
| 03/18/2004 | WO2004022269A2 Method and apparatus for controlling the size of powder produced by the armstrong process |
| 03/18/2004 | US20040052672 Reduction of metal compound; immersion of sample in melt; granulation; controlling particle sizes |
| 03/18/2004 | US20040050780 Process for reducing chromium nonvolatile residue resulting from air oxidation of cyclohexane |
| 03/18/2004 | US20040050208 Method of making elemental materials and alloys |
| 03/18/2004 | DE10335448A1 Process for recovering tantalum and niobium from raw materials containing tantalum oxide and niobium oxide comprises digesting the raw materials with hydrofluoric acid and extracting with a water-insoluble organic solvent |
| 03/18/2004 | CA2500909A1 Preparation of alloys by the armstrong method |
| 03/18/2004 | CA2498024A1 Method and apparatus for controlling the size of powder produced by the armstrong process |
| 03/18/2004 | CA2497999A1 Process for separating ti from a ti slurry |
| 03/18/2004 | CA2497997A1 Screw device for transfer of ti-containing reaction slurry into a vacuum vessel |
| 03/11/2004 | US20040045834 Process for the utilization of vanadium bound in chromium ore as vanadium(V) oxide by electrolysis |
| 03/10/2004 | CN1480281A Method for preparing molybednum powder |
| 03/03/2004 | CN1479810A Intermetallic compounds |
| 03/03/2004 | CN1479795A Method for recovering titanium dioxide from titanium dioxide bearing materials like steel making slags |
| 03/03/2004 | CN1479794A Metal and alloy powers and powder fabrication |
| 03/03/2004 | CN1478908A Method and device for separating iron and titanium to prepare high titanium slag |
| 03/02/2004 | US6699446 Leaching ore with aqueous solution of hydrogen halide; separating solids from leachate; subjecting leachate to extraction with immiscible organic phase that selectively removes iron values; |
| 03/02/2004 | US6699305 Production of metals and their alloys |
| 02/25/2004 | EP1390299A1 Autoclave control mechanisms for pressure oxidation of molybdenite |
| 02/25/2004 | EP1390113A1 Production of pure molybdenum oxide from low grade molybdenite concentrates |
| 02/18/2004 | CN1138864C V2O3 electro-aluminothermic process for smelting FeV50 |
| 02/12/2004 | WO2003068693A8 Processes for treating iron-containing waste streams |
| 02/12/2004 | US20040028585 Cooling melt to harden; extraction, separation |
| 02/12/2004 | US20040026330 Process for the utilization of vanadium from chromium ore as vanadium (V) oxide |
| 02/12/2004 | US20040026262 Solid phase; using melt electrolyte |
| 02/11/2004 | EP1090152B1 Method for processing steel slags |
| 02/10/2004 | US6689187 Tantalum powder for capacitors |
| 02/05/2004 | WO2004011685A1 Producing metallic articles by reduction of nonmetallic precursor compounds and melting |
| 02/05/2004 | DE10231777A1 Production of a tungsten base material for hollow charges, fragments and/or penetrators comprises removing interstitial impurities from the base material |
| 01/29/2004 | WO2004009857A1 A separation process |
| 01/29/2004 | US20040016319 Furnishing a nonmetallic precursor compound comprising metallic constituent element; chemically reducing nonmetallic precursor compound to produce metallic particle; melting and solidifying metallic particle to produce article |
| 01/28/2004 | CN1470656A Method for producing tungstic acid from tungstite powder |
| 01/22/2004 | WO2004007808A1 Method and apparatus for producing niobium powder or tantalum powder |
| 01/22/2004 | WO2004007775A2 Direct melting and refining of metal oxide material |
| 01/22/2004 | US20040011739 Treating aqueous medium containing solution of zirconium and hafnium compound with ligand which complexes with one of the metals; passing over filtration membrane which allows complexes to pass but retains metals not complexed |
| 01/20/2004 | US6679931 Method for recovering metallic chromium from slag containing chromium oxide |
| 01/20/2004 | CA2233388C Method for processing chromium oxide containing substances in large quantities, method for utilizing the processed substances, and products comprising the processed substances |
| 01/14/2004 | EP1379704A1 Method for separating zirconium and hafnium tetrachloride with the aid of a melted solvent |
| 12/30/2003 | US6671164 Niobium powder, sintered body using the powder, and capacitor using the same |
| 12/24/2003 | WO2003106082A1 Method for producing metal powder and formed product of raw material for metal |
| 12/24/2003 | WO2003106081A1 Method for fabricating a metallic article without any melting |
| 12/24/2003 | WO2003106080A1 Method for preparing metallic alloy articles without melting |
| 12/24/2003 | WO2003089674A3 Acid beneficiation of ore |
| 12/24/2003 | WO2003068693A3 Processes for treating iron-containing waste streams |
| 12/24/2003 | CA2488993A1 Method for fabricating a metallic article without any melting |
| 12/24/2003 | CA2488990A1 Method for preparing metallic alloy articles without melting |
| 12/18/2003 | US20030231974 Mixing the base-metal precursor compound and the alloying-element precursor compound to form a compound mixture, chemically reducing the compound mixture to a metallic alloy, without melting the metallic alloy, casting |
| 12/18/2003 | US20030230170 Chemically reducing mixture of nonmetallic precursor compounds to produce initial metallic material without melting and consolidating to produce consolidated metallic article |
| 12/18/2003 | US20030230167 Producing precursor of desired morphology, converting precursor into oxide of valve metal, stabilizing structure of oxide by heat treatment, reducing stabilized oxide while retaining morphology; electrolyte capacitors |
| 12/17/2003 | EP1080239B1 Process to recover molybdenum and vanadium metals from spent catalyst by alkaline leaching |
| 12/16/2003 | US6663763 Ionization of titanium oxide cathodes, in electrical and electronic apparatus having graphite anodes and calcium oxide and chloride mixtures as electrolytes; electrolysis |
| 12/11/2003 | WO2003102254A1 Method of metal recovery |
| 12/11/2003 | US20030226624 Process for production of titanium alloy |
| 12/10/2003 | EP1368513A1 Extraction of metals |
| 12/10/2003 | EP1368503A2 Method for increasing the dry residue in processed cyclone dust |
| 12/10/2003 | CN1461353A Method for separating zirconium and hafnium tetrachloride with aid of melted solvent |
| 12/09/2003 | US6660058 Preparation of silver and silver alloyed nanoparticles in surfactant solutions |
| 12/09/2003 | US6659283 Removing impurities from tantalum or silver vanadium oxide particles, using separators having variable magnetic flux between two rods; purification |
| 12/09/2003 | CA2243748C Straight hearth furnace for titanium refining |
| 12/04/2003 | WO2003099491A1 Method and device for producing metal powder |
| 12/02/2003 | CA2117155C Separation and recovery of metal values from natural bitumen ash |
| 11/27/2003 | WO2003097533A1 Process for removal of radioactive impurities from zirconium containing materials |