| Patents for C22C 33 - Making ferrous alloys (11,268) |
|---|
| 01/03/1990 | EP0348804A2 Wear-resistant component and process for preparing it |
| 01/02/1990 | US4891080 Construction materials |
| 01/02/1990 | US4891068 Leaf-shaped |
| 12/28/1989 | DE3821896A1 Pulverulent metal-containing material and process therefor |
| 12/27/1989 | EP0348380A1 Use of an iron-base alloy in the manufacture of sintered parts with a high corrosion resistance, a high wear resistance as well as a high toughness and compression strength, especially for use in the processing of synthetic materials |
| 12/26/1989 | US4889688 Adding spheroidization and graphitization promoters to molten metals, charging, molding; thin-shell cast articles |
| 12/19/1989 | US4888114 Filling pores with sintered metal oxide powder |
| 12/19/1989 | US4888068 Rare earth elements, iron, cobalt, boron alloy; sintering, annealing, controlled heating and cooling |
| 12/14/1989 | WO1989012112A1 SINTERED MAGNETIC Fe-Co MATERIAL AND PROCESS FOR ITS PRODUCTION |
| 12/13/1989 | EP0345921A2 Powder additives for coating materials or for plastics |
| 12/13/1989 | CN1006077B Process for producing worm-shape graphitic cast iron |
| 12/12/1989 | US4886637 Purging to reduce oxygen concentration |
| 12/05/1989 | US4885133 Wear-resistant sintered iron-based alloy and process for producing the same |
| 11/29/1989 | CN1005919B Reduction-fusion process for preparation of rare-earth fe-mn alloy |
| 11/21/1989 | US4881984 Radial orientation and compaction by heating an evacuated and sealed container charged with gas-atomized particles of a rare earth metal/fe/b/ alloy |
| 11/21/1989 | US4881465 Particles of ferrotungsten alloy suspended in lead alloy matrix; low lead concentration |
| 11/15/1989 | EP0341643A1 Corrosion-resistant cold-worked steel and composite containing a matrix of this cold-worked steel and a hard material |
| 11/15/1989 | CN1037176A High magnetic capability accumulated neodymium praseodymium permanent magnetic alloy and the preparation technology thereof |
| 11/14/1989 | US4880461 Super hard high-speed tool steel |
| 11/14/1989 | US4880460 Powder metallurgy high speed tool steel article and method of manufacture |
| 11/02/1989 | EP0339914A1 Process for producing finely divided spherical metal powders |
| 11/02/1989 | EP0339767A2 Method and apparatus for making flakes of RE-Fe-B-type magnetically-aligned material |
| 11/02/1989 | EP0339436A1 A hard alloy particle dispersion type wear resisting sintered ferro alloy and method of forming the same |
| 11/01/1989 | CN1036797A Method for producing chromium-containing molten iron with low sulphur concentration |
| 10/26/1989 | DE3812048A1 Process for alloying and/or inoculating and/or deoxidising molten cast iron produced in a cupola |
| 10/19/1989 | WO1989009842A1 Process for producing iron-boron-silicon alloy |
| 10/19/1989 | WO1989009841A1 Method of preparing oxidation resistant iron base alloy compositions |
| 10/17/1989 | US4874576 Method of producing nodular cast iron |
| 10/04/1989 | EP0335213A2 Method for producing thermoelectric elements |
| 10/04/1989 | EP0334968A1 Composite alloy steel powder and sintered alloy steel |
| 09/27/1989 | EP0334478A2 Die-upset manufacture to produce high volume fractions of RE-Fe-B type magnetically-aligned material |
| 09/26/1989 | CA1260366A1 Method of forming magnetostrictive rods from rare earth-iron alloys |
| 09/21/1989 | WO1989008609A2 Production of silicon carbide, manganese carbide and ferrous alloys |
| 09/20/1989 | CN1035737A Rare-earth permanent magnet and fabrication method |
| 09/19/1989 | US4867809 Rare earth metal, iron, obron, flattening isotropic powders |
| 09/19/1989 | US4867788 Powder metallurgy process |
| 09/13/1989 | EP0331679A1 High density sintered ferrous alloys. |
| 09/12/1989 | US4865652 Method of producing titanium-modified austenitic steel having improved swelling resistance |
| 09/06/1989 | EP0331286A2 Rapid compaction of rare earth-transition metal alloys in a fluid-filled die |
| 09/06/1989 | EP0331285A2 Explosive compaction of rare earth-transition metal alloys in a fluid medium |
| 09/06/1989 | CN1035325A Cast-iron used for glass bottle mould |
| 09/05/1989 | US4863684 Method and apparatus for adding shot to molten steel |
| 09/05/1989 | US4863515 Impact strength, wear resistance |
| 09/05/1989 | US4863513 Iron-base anti-wear sintered alloy member |
| 08/30/1989 | EP0330482A2 Method for producing chromium containing molten iron with low sulphur concentration |
| 08/30/1989 | CN2043533U Foundry ladle with a cover specially adapted to pretreatment of spherulitic iron and creep iron furnaces |
| 08/29/1989 | US4861373 Copper infiltration, additives;, pressing, sintering, alloying |
| 08/29/1989 | US4861372 Roller in rotary compressor and method for producing the same |
| 08/23/1989 | EP0328677A1 PROCESS FOR MELT REDUCTION OF Cr STARTING MATERIAL AND MELT REDUCTION FURNACE |
| 08/22/1989 | US4859410 Die-upset manufacture to produce high volume fractions of RE-Fe-B type magnetically aligned material |
| 08/22/1989 | US4859237 Hydrometallurgical process for producing spherical maraging steel powders with readily oxidizable alloying elements |
| 08/22/1989 | US4859164 Ferrous sintered alloy vane and rotary compressor |
| 08/09/1989 | EP0327237A2 A method of testing the magnesium content of magnesium-treated cast iron |
| 08/02/1989 | EP0325810A1 Process for making spheroidal graphite cast iron |
| 07/27/1989 | DE3826480A1 Process for producing steel filaments for high-gradient magnetic fields |
| 07/26/1989 | CN2041688U Separating type high temperature smelting furnace for silicon iron |
| 07/25/1989 | US4851189 Alloying iron powder with carbide forming molybdenum, chromium, and vandium; sintering and hot isostatic compression |
| 07/25/1989 | US4851058 Boron, praseodymium, neodymium, and iron |
| 07/18/1989 | US4849164 Method of producing iron powder article |
| 07/18/1989 | CA1257481A1 Graphitic carbons containing interstiticeable elements |
| 07/12/1989 | CN1033844A High strength grey cast iron with casting bainite |
| 07/11/1989 | US4846899 Clad low carbon steels |
| 07/05/1989 | EP0323002A1 Iron-cobalt type soft magnetic material |
| 07/04/1989 | US4844751 Method for manufacturing a permanent magnet material from starting components in powder form |
| 07/04/1989 | US4844738 Used as a sliding part in an internal combustion engine |
| 07/04/1989 | US4844024 Valves for internal combustion engines |
| 06/28/1989 | EP0322397A2 High speed steel prepared by powder metallurgy, wear-resistant part prepared thereby and process for its manufacture |
| 06/20/1989 | US4840665 Wear-resistant sintered iron-based alloy and process for producing the same |
| 06/20/1989 | CA1255926A1 Method of preparing a hard magnet by addition of a quench rate range broadening additive and a hard magnet prepared thereby |
| 06/13/1989 | US4839139 Compaction of mixed alloy particles; partly uncoated and partly coated with hard, wear resistant materials |
| 06/13/1989 | US4839138 Metal powder mixture forming facing is separately compacted before molding with base |
| 06/13/1989 | CA1255762A1 Arc-spraying filler wire for producing a coating which is highly resistant to mechanical and/or chemical wear |
| 06/07/1989 | EP0319181A1 Molybdenum addition agent and process for its production |
| 06/06/1989 | US4836848 Fe-based sintered alloy for valve seats for use in internal combustion engines |
| 06/01/1989 | WO1989005031A1 SINTERED Fe-Nd-B MAGNET |
| 05/31/1989 | CN1033197A Grinding balls of vanadium and titanium alloyed bainite nodular cast iron used in cement industry |
| 05/30/1989 | US4834800 Allooying powder, polymeric binder |
| 05/24/1989 | EP0317366A1 Process for producing nodular cast iron |
| 05/24/1989 | EP0316921A1 Lead-containing additives for steel melts |
| 05/24/1989 | EP0316920A1 Nitrogen containing additive for molten steel |
| 05/24/1989 | CN1033076A Material for alloying of metal by adding vanadium |
| 05/11/1989 | DE3736329A1 Gasket (sealing ring) for exhaust pipe |
| 05/09/1989 | CA1253721A1 Neodymium alloys and process for preparing the same |
| 05/03/1989 | CN1032677A White iron production promoted by telluride alloy |
| 05/03/1989 | CN1004083B Method for producing rare earth-iron-boron permanent magnet |
| 04/26/1989 | EP0313225A2 Grain size control of a metal powder product |
| 04/25/1989 | US4824734 Tin-containing iron base powder and process for making |
| 04/19/1989 | EP0312161A1 Sintered materials |
| 04/18/1989 | CA1252634A1 Process of making silicon, iron and ferroalloys |
| 04/12/1989 | EP0311407A1 Process for fabricating parts for particulate material |
| 04/11/1989 | US4820484 Hot isostatic pressing of prealloyed powder of coal, chromium, silicon, manganese |
| 04/11/1989 | US4820341 Process for producing silicon or ferrosilicon in a low-shaft electric furnace |
| 04/11/1989 | CA1252278A1 Process for the production of silicon or ferrosilicon in an electric low shaft furnace, and rawmaterial mouldings suitable for the process |
| 04/06/1989 | WO1989002802A1 Composite alloy steel powder and sintered alloy steel |
| 04/05/1989 | EP0310416A2 Timepiece |
| 04/05/1989 | EP0310115A1 Iron base powder mixture and method |
| 04/05/1989 | EP0309657A1 Pulverulent metal-containing material and process for the production of a protective layer |
| 04/05/1989 | CN1032197A Productive method for particulate si-p-fe alloy |
| 04/04/1989 | CA1251952A1 Steel materials for welded structures |
| 03/29/1989 | CN1032035A Producing permanent magnet from rare earth chloride |