| Patents for C21D 6 - Heat treatment of ferrous alloys (4,815) |
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| 02/09/1999 | US5870021 Annealing magnetic elements for stable mechanical properties |
| 02/04/1999 | WO1999005328A1 Method for producing ultra-high strength, weldable steels with superior toughness |
| 02/04/1999 | DE19733135A1 Producing an article of two constituent components |
| 02/02/1999 | US5866066 Age hardenable alloy with a unique combination of very high strength and good toughness |
| 02/02/1999 | US5865913 Deep cryogenic tempering process based on flashing liquid nitrogen through a dispersal system |
| 02/02/1999 | US5865907 Composite magnetic member, process for producing the member and electromagnetic valve using the member |
| 02/02/1999 | US5865385 Comminuting media comprising martensitic/austenitic steel containing retained work-transformable austenite |
| 01/26/1999 | US5863494 Large gas turbine rotor casting comprising heat resistant, ductile alloy |
| 01/21/1999 | WO1999002748A1 Amorphous magnetostrictive alloy with low cobalt content and method for annealing same |
| 01/21/1999 | WO1999002747A1 Ultra high strength, secondary hardening steels with superior toughness and weldability |
| 01/20/1999 | EP0892079A1 Heat-resisting cast steel |
| 01/19/1999 | US5861068 Method of using stainless steel having anti-microbial property |
| 01/13/1999 | EP0770696B1 High strength and high toughness heat resisting steel and its manufacturing method |
| 01/12/1999 | US5858128 High chromium martensitic steel pipe having excellent pitting resistance and method of manufacturing |
| 01/07/1999 | EP0889488A1 Soft magnetic alloy of the Fe-Ni-Cr-Ti type for magnetic circuit of a high sensitive relay |
| 12/30/1998 | EP0720664B1 Method of treating at least one component made of weakly magnetic material |
| 12/30/1998 | CN1203691A Heat-treatment of glassy metal alloy for article surveillance system markers |
| 12/23/1998 | EP0885975A1 Process for continuous heat treating metal wires and strips |
| 12/16/1998 | CN1201991A Process for heat treatment, in magnetic field, of component made of soft magnetic material |
| 12/16/1998 | CN1201839A Heat treatment of sulfuric acid resistant stainless steel |
| 12/10/1998 | WO1998055659A1 Process for the forging of steel having a very high carbon content |
| 12/09/1998 | EP0883141A1 Heating process with magnetic field of a soft magnetic component |
| 12/09/1998 | CN1201419A Stainless steel surface claddings of continuous caster rolls |
| 12/08/1998 | US5846353 Process for the production of a body of material stable at high temperatures from an iron-nickel superalloy of the type in 706 |
| 12/03/1998 | DE19823911A1 Precipitation hardenable stainless steel |
| 12/02/1998 | EP0880423A1 Cutting die and method of forming |
| 12/02/1998 | EP0880422A1 Cutting die and method of making |
| 12/01/1998 | US5843246 Process for producing dual phase ferritic stainless steel strip |
| 11/25/1998 | CN1199779A Method for batch annealing of austenitic stainless steels |
| 11/25/1998 | CN1040901C Process for producing high-strength sucker rod |
| 11/24/1998 | US5840136 Temperature-raising bainite forming process |
| 11/19/1998 | WO1998051832A1 Iron-based casting alloy and process for making same |
| 11/19/1998 | DE19815670A1 Hard refined steel bore screw manufacture method |
| 11/19/1998 | CA2331503A1 Iron-based casting alloy and process for making same |
| 11/18/1998 | EP0877825A1 Method of preparing a magnetic article from a duplex ferromagnetic alloy |
| 11/10/1998 | US5835016 Multi-thread re-entrant marker with transverse anisotropy flux concentrators |
| 11/10/1998 | US5833919 Air-induced melting, hot rolling and solution heat treament; liquified natural gas-related facilities, e.g. storage tanks, transporting pipes, valves and ships |
| 11/03/1998 | US5830290 Method for the manufacture of a spring band clip |
| 10/28/1998 | EP0874061A1 Method for batch annealing of austenitic stainless steels |
| 10/27/1998 | US5827378 Method of treatment of metallic workpieces |
| 10/27/1998 | US5827376 Molds for plastic prototyping and isothermal forging of aluminum, steel therefor, and method of manufacturing thereof |
| 10/20/1998 | US5824265 Stainless steel alloy for pulp refiner plate |
| 10/13/1998 | US5821000 Actuator for automobile oil controlling device; martensite stainless steel comprising nickel, carbon, manganese, nitrogen, chromium, silicon, niobium |
| 10/13/1998 | US5820699 Martensitic stainless steel having excellent hot workability and sulfide stress cracking resistance |
| 10/08/1998 | DE19714306A1 Case hardening of sintered molybdenum-containing steel parts |
| 10/07/1998 | EP0869196A2 Cast cold tool and method for producing the same |
| 10/07/1998 | EP0796352A4 Ultra-high strength steels and method thereof |
| 10/07/1998 | EP0792379A4 Dual-phase steel and method thereof |
| 10/06/1998 | US5817192 High-strength and high-toughness heat-resisting steel |
| 10/01/1998 | WO1998042889A1 Polishing-finished stainless steel sheet having excellent stain removability, and production method thereof |
| 09/30/1998 | EP0867523A1 Highly tenacious ferritic heat resisting steel |
| 09/30/1998 | EP0867522A2 High toughness heat-resistant steel, turbine rotor and method of producing the same |
| 09/29/1998 | US5814166 Process for heat treating and tempering surgical needles |
| 09/23/1998 | EP0866145A2 Completely martensitic steel alloy |
| 09/22/1998 | US5811918 Shadow mask of the nickel-iron type having specific composition |
| 09/22/1998 | US5810950 Annealing a low carbon, austenitic steel sheet in nitrogen or nitrogen and hydrogen to reduce the thickness of the oxide surface layer and to precipitate aluminum nitride particles to effect easy peeling |
| 09/17/1998 | WO1998040180A1 A steel and a heat treated tool thereof manufactured by an integrated powder metallurgical process and use of the steel for tools |
| 09/09/1998 | CN1192786A Raw material for magnetic shield, prodn. method thereof, and color TV receiver |
| 09/09/1998 | CN1192482A Stainless steel wire and mfg. process |
| 09/09/1998 | CN1039725C High strength high toughness spring steel, and mfg. process therefor |
| 09/08/1998 | US5803991 High chromium content by diffusion; heat treatment in a plurality of heat cycles to achieve uniform chromium content in the thickness direction |
| 09/02/1998 | EP0861907A2 Process for producing a bearing component |
| 09/01/1998 | US5800641 Method of thermal or thermochemical treatment of precision steel components |
| 08/27/1998 | WO1998036838A1 Comminuting media comprising martensitic/austenitic steel containing retained work-transformable austenite |
| 08/26/1998 | EP0860510A1 Material for magnetic shield, production method thereof, and color television tube |
| 08/25/1998 | US5798082 High-strength and high-toughness heat-resistant cast steel |
| 08/20/1998 | DE19807048A1 Room temperature soft magnetic alloy glass production |
| 08/06/1998 | WO1998033945A1 Ferromagnetic amorphous metallic alloy and annealing method |
| 08/06/1998 | CA2279981A1 Ferromagnetic amorphous metallic alloy and annealing method |
| 07/28/1998 | US5786762 Magnetostrictive element for use in a magnetomechanical surveillance system |
| 07/22/1998 | EP0853810A1 Heat-treatment of glassy metal alloy for article surveillance system markers |
| 07/21/1998 | US5783001 Exposure to vacuum to remove volatile surface contaminants |
| 07/21/1998 | US5783000 Method for heat treatment of steel, and products of steel |
| 07/14/1998 | US5779822 Having a carbide phase produced by aging heat treatment of single crystal austenitic phase; nuclear reactor cores; nuclear fusion reactors; stress corrosion cracking resistance; high strength; durability |
| 07/08/1998 | CN1186865A Die and quenching method of the same |
| 07/08/1998 | CN1039036C Martensitic heat-resisting steel having excellent resistance to HAZ softening and process for producing the steel |
| 07/01/1998 | EP0851039A1 Stainless steel wire and process for production |
| 06/23/1998 | US5769965 Annealing, then forming nitride layer on electromagnetic fuel injection valves, chromium steels |
| 06/17/1998 | EP0848397A1 Manufacturing process of a soft magnetic iron based alloy component with nanocristalline structure |
| 06/17/1998 | CN1185182A Martensitic stainless steel having high mechanical strength and corrosion resistance and relative mfd. articles |
| 06/17/1998 | CN1185012A Process for mfg. magnetic component made of iron-based soft magnetic alloy having nanocrys talline structure |
| 06/16/1998 | US5767770 Semi-hard magnetic elements formed by annealing and controlled oxidation of soft magnetic material |
| 06/16/1998 | US5766381 Method of producing bainitic steel materials having a less scattering of properties |
| 06/16/1998 | US5766378 Stainless steel surface claddings of continuous caster rolls |
| 06/16/1998 | US5766376 High-strength ferritic heat-resistant steel and method of producing the same |
| 06/02/1998 | US5759308 Iron alloys tempered by heating to precipitate crystals for tensile strength |
| 06/02/1998 | US5759304 Process for producing hot rolled steel strip with adjusted strength |
| 05/20/1998 | DE19750606A1 Heat treatment and tempering of surgical needles |
| 05/13/1998 | CN1181600A Anisotropic magnet powders and their production method |
| 05/05/1998 | US5746845 Method for manufacturing high-strength member of precipitation hardening martensitic stainless steel |
| 04/30/1998 | WO1998018110A1 Magnetostrictive element for use in a magnetomechanical surveillance system |
| 04/30/1998 | WO1998017835A1 Steel containing nickel and a method for producing rolling and forging products from such steel |
| 04/30/1998 | DE19645139A1 Ni-haltiger Stahl und Verfahren zur Herstellung von Walz- und Schmiedeprodukten aus diesem Stahl Ni-containing steel and process for the production of rolled and forged steel products in this |
| 04/29/1998 | EP0838533A1 Heat resisting alloy for exhaust valve and method for producing the exhaust valve |
| 04/29/1998 | CN1180111A Method for producing Fe-Ni alloy sheet and Fe-Ni alloy shadow mask |
| 04/01/1998 | CN1177821A Hard magnetic material |
| 04/01/1998 | CN1177644A Method for cooling steel pipe |
| 03/26/1998 | DE19739959A1 Low cost hard magnetic material containing amorphous phase |
| 03/18/1998 | EP0828862A1 Martensitic stainless steel having high mechanical strength and corrosion resistance and relative manufactured articles |
| 03/12/1998 | WO1998010112A1 Age hardenable alloy with a unique combination of very high strength and good toughness |