| Patents for C22C 33 - Making ferrous alloys (11,268) |
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| 05/02/1991 | EP0424604A1 Plunger bell for treatment of melts |
| 05/02/1991 | EP0274542B1 Alloy steel powder for powder metallurgy |
| 04/30/1991 | US5011654 Production of flat products |
| 04/23/1991 | US5009842 Powder metallurgy |
| 04/23/1991 | US5009841 Process for dewaxing injection molded metal pieces and for improving the properties thereof |
| 04/17/1991 | CN1050745A Method for manufacturing iron-boron-silicon alloy |
| 04/16/1991 | US5008074 Consists of silicon, titanium, manganese, barium, calcium carbon, aluminum and iron; control of nitrogen porosity defects |
| 04/16/1991 | US5007956 Assembled cam shaft |
| 04/16/1991 | CA1282914C Process of making a sintered molding |
| 04/13/1991 | WO1991006107A1 Corrosion-resistant, rare earth-transition metal magnet and method of production thereof |
| 04/10/1991 | EP0421811A1 Alloy steel for use in injection molded sinterings produced by powder metallurgy |
| 04/10/1991 | EP0421084A1 Method for making components by powder metallurgy |
| 04/04/1991 | DE3932162A1 Mfg. spherical graphite iron - using magnesium silicide additive (promoted by rare earth metal) to moderate vigorous reaction and to improve prod. |
| 04/03/1991 | EP0420309A1 Method of infiltrating a tubular component |
| 04/03/1991 | CN1050412A Method for reclaiming waste alloy materials |
| 04/02/1991 | CA2000034A1 Corrosion-resistant sintered alloy steels and method for making same |
| 03/27/1991 | EP0418943A1 Sintered materials |
| 03/26/1991 | US5002733 Silicon alloys containing calcium and method of making same |
| 03/26/1991 | US5002728 Method of manufacturing soft magnetic Fe-Si alloy sintered product |
| 03/21/1991 | WO1991003579A1 Aluminum-manganese-iron steel alloy |
| 03/19/1991 | CA1281551C Method for addition of low-melting point metal |
| 03/13/1991 | EP0416418A2 Method of making rocker arm |
| 03/06/1991 | EP0415633A1 Iron-based sintered slugs for plastic processing and method for making them |
| 03/06/1991 | CN1011894B Method and equipment for producing iron alloy |
| 03/05/1991 | US4997167 Ladle inoculant dispenser |
| 02/27/1991 | EP0414376A2 Method for the preparation of a rare earth-iron-boron permanent magnet |
| 02/26/1991 | US4996023 Method of manufacturing a permanent magnet |
| 02/20/1991 | CN1011707B Method for cast-iron spheroidazation and its device |
| 02/13/1991 | CN1049120A Process for producing synthetic materials |
| 02/12/1991 | US4992235 Molding metal or metal alloy powders, sintering the molding in reducing gas atmosphere |
| 02/12/1991 | US4992234 Method for the preparation of rare earth-base permanent magnet |
| 02/12/1991 | US4992233 Sintering metal powders into structures without sintering aids |
| 02/06/1991 | EP0411784A1 Production of flat products |
| 02/06/1991 | EP0411061A1 Fe-Mn-Al-C ALLOYS AND THEIR TREATMENT. |
| 02/05/1991 | US4989662 Differential pressure, countergravity casting of a melt with a fugative alloyant |
| 01/30/1991 | EP0410360A1 Agent for treating of castiron melts |
| 01/30/1991 | EP0409853A1 Production of manganese carbide and ferrous alloys. |
| 01/30/1991 | CA2021921A1 Production of flat products |
| 01/26/1991 | CA2021451A1 Agent for the treatment of cast iron melts, process for the production thereof and the use thereof for treating cast iron melts |
| 01/23/1991 | EP0409647A2 Manufacturing process for sintered Fe-P alloy product having soft magnetic characteristics |
| 01/23/1991 | CN1048766A Proportioning and manufacturing method of iron-base rare-earth permanent-magnet alloy |
| 01/15/1991 | US4985309 Alloyed steel powder for powder metallurgy |
| 01/15/1991 | US4985075 Method for manufacturing chromium-bearing pig iron |
| 01/15/1991 | US4985073 Pigments |
| 01/10/1991 | WO1991000602A1 Method for preparing permanent magnets based on neodymium-iron-boron |
| 01/09/1991 | EP0406580A1 A composite material and a method for producing the same |
| 01/02/1991 | EP0405362A1 Method for manufacturing alloy rod having giant magnetostriction |
| 01/02/1991 | EP0405360A1 Method for manufacturing alloy rod having giant magnetostriction |
| 01/02/1991 | CN1048180A Drill chuck nut |
| 01/02/1991 | CN1011046B Inoculant for gray pig iron |
| 01/01/1991 | US4981510 Process and apparatus for the production of ferrochromium |
| 12/27/1990 | CA1278200C Wear-resistant, sintered iron alloy and process for producing the same |
| 12/26/1990 | CN1048067A Process for producing ferrous alloy containing barium and silicon |
| 12/18/1990 | US4978499 Soft steel for machine cutting and method of producing it |
| 12/14/1990 | WO1990016075A1 Improved magnetic materials and process for producing the same |
| 12/14/1990 | CA2034496A1 Magnetic materials and process for producing the same |
| 12/13/1990 | WO1990015165A1 Manufacture of ferroalloys using a molten bath reactor |
| 12/13/1990 | DE4017030A1 Wear and corrosion resistant valve seating ring for combustion engine |
| 12/12/1990 | EP0401482A2 Wear resistant sintered alloy, especially for valve seats for internal combustion engines |
| 12/12/1990 | CN1047704A Manufacture of ferro alloy by molten bath reactor |
| 12/12/1990 | CN1047697A Method of producting narrow band steel having hardenability |
| 12/11/1990 | US4976916 Method for producing ferrous sintered alloy product |
| 12/11/1990 | US4976778 Dimensional stability |
| 12/04/1990 | US4975335 Fe-Mn-Al-C based alloy articles and parts and their treatments |
| 11/27/1990 | US4973356 Cutting tools |
| 11/21/1990 | CN1047112A Anti-abrasive and anti-corrosive austenic cast iron and its producing technology |
| 11/21/1990 | CN1047109A Process for smelting reduction of cr materials, and smelting reduction furnace therefor |
| 11/20/1990 | US4971755 Three different size particle powders, sintering, vibration, molding dies |
| 11/20/1990 | US4971622 Sulphur and silicon control in ferrochromium production |
| 11/20/1990 | CA1276486C Method of making rare-earth element containing permanent magnets |
| 11/13/1990 | US4970049 Sintered materials |
| 11/07/1990 | EP0395767A1 Method of obtaining spheroidal graphite cast iron |
| 11/07/1990 | CN1046760A Process for casting nodular graphite cast iron with as-cast ferrite by metal mould |
| 11/07/1990 | CN1010325B Process and apparatus for recovering metal and metal alloy |
| 11/06/1990 | CA1275810C Preparations of rare earth-iron alloys by thermite reduction |
| 10/31/1990 | EP0394455A1 Process for producing iron-boron-silicon alloy |
| 10/30/1990 | US4966626 Rare earth borides |
| 10/30/1990 | CA1275587C Dimensionally stable powder metal compositions |
| 10/23/1990 | US4964909 Heat-insulating component and a method of making same |
| 10/23/1990 | US4964908 High density sintered ferrous alloys |
| 10/17/1990 | EP0392405A2 Process for dewaxing and improving the properties of injection molded metallic articles |
| 10/17/1990 | EP0250414B1 Method in producing a molding of an iron alloy |
| 10/17/1990 | CN1046195A High-efficiency inoculant of chrome-manganese series white iron |
| 10/17/1990 | CN1046190A Process for raising chromium recovery ratio by use of high-carbon chrome iron for smelting stainless steel |
| 10/16/1990 | US4963200 Titanium and yttrium composite oxide matrix |
| 10/09/1990 | US4961784 Blowing inert gas from bottom and side and oxygen from top to decarburize reduced ores |
| 10/03/1990 | EP0389511A1 SINTERED Fe-Nd-B MAGNET |
| 10/03/1990 | CN1009836B Process for producing nodular iron |
| 10/02/1990 | US4960562 Dispersion strengthened ferritic steel cladding tube for nuclear reactor and its production method |
| 10/02/1990 | US4960469 Method of manufacturing magnetically anisotropic magnet materials and device for same |
| 09/26/1990 | EP0388549A1 Method for preparing powder metallurgical sintered product |
| 09/26/1990 | CN1045659A Permanent magnetic alloy containing rare earth element |
| 09/25/1990 | US4959274 Multilayered iron-copper-lead alloy bearing material |
| 09/20/1990 | CA2012011A1 A two-stage ferrosilicon smelting process |
| 09/19/1990 | CN1045424A Antiwear cast iron and productive method thereof |
| 09/19/1990 | CN1045423A Method for smelting reduction of ni ore |
| 09/12/1990 | EP0386472A2 Process for producing rare earth-iron-boron-type permanent magnets |
| 09/12/1990 | EP0386407A2 Method for smelting reduction of Ni ore |
| 09/12/1990 | EP0386311A2 Method of producing corrosion-, heat- and wear-resistant member, and the member produced |
| 09/11/1990 | US4956011 Water atomizing powders, magnetism, cores |