| Patents for C22C 33 - Making ferrous alloys (11,268) |
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| 01/09/1992 | WO1992000595A1 Method for processing powdered magnetic materials and products thereby obtained |
| 01/09/1992 | WO1992000158A1 METHOD OF POWDERMETALLURGICALLY MANUFACTURING FULLY DENSE BODIES FROM HIGH TEMPERATURE MARTENSITIC Cr STEEL |
| 01/01/1992 | CN1057488A Electric furnace steelmaking method capable of reducing manganese from manganese-containing |
| 12/26/1991 | WO1991019582A1 Iron-based powder, component produced therefrom, and method of producing the component |
| 12/25/1991 | CN1057297A Process and equipment for continuous smelting and continuous casting of cast |
| 12/25/1991 | CN1015184B Self-lubricating iron-base wear-resistant alloy |
| 12/18/1991 | EP0461260A1 Method for obtaining electrode material for electrospark alloying |
| 12/18/1991 | CN1057017A 合金吸收器 Alloy absorber |
| 12/18/1991 | CN1015114B Method for controlling and redressing graphite precipitation form during producing castings with cast-iron contg. additives for improved texture |
| 12/17/1991 | US5073214 Magnetic material for a magnetic head |
| 12/12/1991 | WO1991019300A1 Improved magnetic materials and process for producing the same |
| 12/04/1991 | CN1056715A Waste iron chip smelting direct casting piece technology |
| 12/04/1991 | CN1015001B Technology for alloying of cast-iron |
| 12/03/1991 | US5069868 Method for producing thermoelectric elements |
| 12/03/1991 | US5069867 Process of manufacturing high-strength sintered members |
| 11/28/1991 | WO1991018123A1 Iron-based powder, component made thereof, and method of making the component |
| 11/26/1991 | US5067551 Method for manufacturing alloy rod having giant magnetostriction |
| 11/21/1991 | EP0457418A1 An optimized double press-double sinter powder metallurgy method |
| 11/17/1991 | CA2035378A1 Optimized double press-double sinter powder metallurgy method |
| 11/12/1991 | US5064608 Camshaft and method for producing the same |
| 11/12/1991 | US5063986 Rare earth and transition metal alloy |
| 11/05/1991 | US5063116 Wire for dot printer |
| 11/05/1991 | US5063011 Doubly-coated iron particles |
| 11/05/1991 | US5062908 Valve guide |
| 10/31/1991 | WO1991016466A1 Tungsten carbide-containing hard alloy that may be processed by melting |
| 10/23/1991 | EP0452550A1 Wire for dot printer |
| 10/16/1991 | CN1055397A Heat-resistant antifriction self-lubricating material and its manufacturing method |
| 10/15/1991 | CA1290574C Method of making steel |
| 10/09/1991 | EP0450678A2 Sulphur treatment of magnesium-contaminated Fe-Cr-Al alloy for improved oxide whisker growth |
| 10/08/1991 | US5055128 Sintered fe-co type magnetic materials |
| 10/03/1991 | WO1991014526A1 Machinability improving supplementary powder and iron or steel powder containing such supplementary powder |
| 10/02/1991 | EP0449566A1 Partially hardened sintered body and method of manufacturing same |
| 10/02/1991 | CN2085688U Spheroidized foundry ladle |
| 10/01/1991 | US5053284 Wear-resistant compound roll |
| 09/25/1991 | EP0447567A1 Corrosion-resistant tm-b-re type magnet and method of production thereof |
| 09/25/1991 | CN1054800A Binary process for production of synthetic silicon iron |
| 09/25/1991 | CN1014079B Maraging steel and method of its production |
| 09/17/1991 | US5049357 Method for manufacturing iron-boron-silicon alloy |
| 09/17/1991 | US5049203 With boron and iron |
| 09/17/1991 | US5049183 Sintered machine part and method |
| 09/12/1991 | DE4106219A1 Sinter powder with increased iron content - gives prods. of improved dimensional stability and mechanical properties,increasing mfg. efficiency |
| 09/11/1991 | CN1013884B High-efficiency inoculant of chrome-manganese series white iron |
| 09/11/1991 | CN1013883B Method for manufacturing molten metal containing ni and cr |
| 09/10/1991 | US5047082 Adding carbon, vlowing oxygen, discharging slag |
| 09/10/1991 | CA1288620C Process and composition for improved corrosion resistance |
| 09/05/1991 | WO1991010754A3 Process for producing high-strength sintered parts from powdered steel |
| 09/04/1991 | EP0444320A2 Differential pressure countergravity casting with alloyant reaction chamber |
| 09/04/1991 | EP0444318A2 Differential pressure, countergravity casting of a melt with a fugative alloyant |
| 09/04/1991 | CN1054273A Modifying technology for helminth graphite cast iron |
| 09/03/1991 | US5045512 Mixed sintered metal materials based on borides, nitrides and iron binder metals |
| 08/28/1991 | EP0443659A1 A process for applying a coating on powdery particles and a process for the production of metallic objects by using these particles |
| 08/28/1991 | EP0443489A1 High-nitrogen ferritic heat-resisting steel and method of production thereof |
| 08/28/1991 | CN1054100A Producing method for highly abrasive parts using new high chromium cast iron |
| 08/28/1991 | CA2030495A1 Differential pressure, countergravity casting with alloyant reaction chamber |
| 08/28/1991 | CA2030494A1 Differential pressure, countergravity casting of a melt with a fugative alloyant |
| 08/27/1991 | WO1991013176A1 A method for controlling and regulating the primary nucleation of iron melts |
| 08/27/1991 | CA2076850A1 Method for controlling and regulating the primary nucleation of iron melts |
| 08/20/1991 | US5041168 Valve guide |
| 08/20/1991 | US5041158 Powdered metal part |
| 08/13/1991 | US5039480 Method for manufacturing molten metal containing Ni and Cr |
| 08/13/1991 | US5039292 Device for manufacturing magnetically anisotropic magnets |
| 08/13/1991 | US5038846 Differential pressure, countergravity casting with alloyant reaction chamber |
| 07/31/1991 | EP0439244A1 Nodularising method |
| 07/31/1991 | CN1053452A Phosphorus family wear-resisting cast iron quenching ball and production process thereof |
| 07/31/1991 | CN1053450A Formula for producing silica-alumina iron by use of ore-heating method and production process thereof |
| 07/25/1991 | WO1991010754A2 Process for producing high-strength sintered parts from powdered steel |
| 07/25/1991 | WO1991010753A1 Metal-powder blend |
| 07/25/1991 | DE4001900A1 Metallpulvermischung Metal powder mixture |
| 07/24/1991 | CN1053267A Casting-state troostite grinding ball |
| 07/24/1991 | CN1013279B Method for mfg. chromium-bearing pig iron |
| 07/17/1991 | EP0246233B1 Tool steel |
| 07/17/1991 | EP0152486B1 Abrasion-resistant sintered alloy |
| 07/16/1991 | US5032355 Method of manufacturing sintering product of Fe-Co alloy soft magnetic material |
| 07/16/1991 | US5031878 Valve seat made of sintered iron base alloy having high wear resistance |
| 07/11/1991 | WO1991009981A1 Sintered alloy bearing |
| 07/11/1991 | WO1991009979A1 Method for obtaining electrode material for electrospark alloying |
| 07/10/1991 | CN1013123B Fe-mn-al-c austenite containing nonmagnetic and low-temp. steels |
| 07/09/1991 | US5030519 Melting, solidification; reduction of particle size |
| 07/03/1991 | EP0435019A1 Workpiece, especially cam from sintered powder metal alloy and process for preparing same |
| 07/02/1991 | US5028388 Method for producing chromium containing molten iron with low sulphur concentration |
| 07/02/1991 | US5028386 Process for the production of tools |
| 06/27/1991 | DE4040030A1 Powder metallurgical cold work steel - useful for processing abrasive and corrosive plastics |
| 06/26/1991 | EP0434113A2 Alloying low-level additives into hot-worked Nd-Fe-B magnets |
| 06/26/1991 | EP0433856A1 Mixed hard metal materials based on borides, nitrides and iron group matrix metals |
| 06/20/1991 | CA2023924A1 Alloying low-level additives into hot-worked nd-fe-b magnets |
| 06/19/1991 | EP0433264A2 Method for the production of preformed material for workpieces comprising a large proportion of metal compounds |
| 06/19/1991 | EP0432434A1 Process for manufacturing joining structural parts from a fully austenitic Cr-Mn steel. |
| 06/19/1991 | CN1012905B Preparing method of si-fe-bi instantaneous inoculant |
| 06/19/1991 | CN1012904B Compound modification agent for white case iron of cr 26 series |
| 06/16/1991 | CA2031640A1 Mixed sintered metal materials based on borides, nitrides and iron binder metals |
| 06/12/1991 | EP0432060A1 Permanent magnet alloy of the type iron-neodymium-boron, sintered permanent magnet and manufacturing process |
| 06/12/1991 | CN2078664U Spheroidizing ladle |
| 06/12/1991 | CN1012839B Apparatus for heat preservation of melted metal |
| 06/04/1991 | US5021085 Melting, molding, hardening, annealing, cooling; heat resistance, wear resistance, high hardness |
| 06/02/1991 | CA2031242A1 Fe, nd and b alloy for permanent magnet; sintered permanent magnet and process therefor |
| 05/29/1991 | EP0428718A1 Improved magnetic materials and process for producing the same |
| 05/29/1991 | CN1051763A Anti-wear, high toughness cast iron |
| 05/08/1991 | EP0151185B1 Tin-containing iron powder and process for its production |
| 05/07/1991 | US5013611 Camshaft composition |
| 05/07/1991 | US5013346 Metal, alloy, glass |