| Patents for C21D 6 - Heat treatment of ferrous alloys (4,815) |
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| 02/14/2002 | US20020017345 Heat treatment method of steel |
| 02/14/2002 | DE10037363A1 Iron-based cast alloy used as a rolling material contains alloying additions of aluminum, boron, chromium, calcium, cobalt, manganese, molybdenum, niobium, tantalum, phosphorus, sulfur, silicon, titanium, vanadium, tungsten and zirconium |
| 02/12/2002 | US6345433 Fabrication method for high speed induction motor rotor |
| 02/07/2002 | WO2002010599A2 High speed angular contact ball bearing |
| 02/06/2002 | CN1334356A Pitting-resistant double phase stainless steel alloy having improved machinability |
| 02/06/2002 | CN1078913C Method for making Fe-Ni alloy used in electron gun parts |
| 02/05/2002 | US6344094 Ferritic-austenitic two-phase stainless steel |
| 02/05/2002 | CA2220568C High strength iron-cobalt-vanadium alloy article |
| 01/31/2002 | DE10062282A1 Wärmebeständiger Stahlguss und Verfahren zu seiner Herstellung Heat-resistant cast steel and method for its manufacture |
| 01/24/2002 | WO2002006548A1 Fe-ni or fe-ni-co or fe-ni-co-cu alloy strip with improved cuttability |
| 01/24/2002 | WO2001081644A8 Austenic steel |
| 01/23/2002 | CN1078252C Production method of heat-treated member |
| 01/22/2002 | US6340400 Stainless steel |
| 01/17/2002 | WO2002004689A1 Ferritic stainless steel for ferromagnetic parts |
| 01/17/2002 | US20020006350 High strength, low expansion |
| 01/17/2002 | CA2384754A1 Ferritic stainless steel for ferromagnetic parts |
| 01/16/2002 | EP1172454A1 Formed member made of steel sheet and method for producing same |
| 01/16/2002 | EP1007745B1 Metallurgical method for processing nickel- and iron-based superalloys |
| 01/16/2002 | CN1331757A Ultra-high strength ausaged steels with excellent cryogenic temp. toughness |
| 01/15/2002 | US6338762 Annealing after cold rolling of a steel plate are repeated after hot rolling, and then temper rolling is performed, excellent fatigue strength; sufficient level of hardness can be achieved even for a low carbon steel when temper rolling is |
| 01/15/2002 | US6338600 Self-tapping, corrosion-resistant screw with hardened tip |
| 01/10/2002 | WO2002002830A1 Steel compositions, method for obtaining same and parts made from same |
| 01/10/2002 | US20020003008 Given alloying elements, specified weight ratio of vanadium to nitrogen; high nitrogen contents |
| 01/10/2002 | US20020003006 Alloy for high-performance rare earth permanent magnet and manufacturing method thereof |
| 01/09/2002 | EP1169485A2 Ultra-high strength ausaged steels with excellent cryogenic temperature toughness |
| 01/03/2002 | WO2002001127A2 Freezer and plant gas system |
| 01/03/2002 | US20020000267 Machine structural steel contains carbide precipitated under a heat treatment for spheroidizing |
| 01/03/2002 | US20020000262 Anisotropic alloy of rare earth metal, transition metal and/or boron, carbon, nitrogen and oxygen; making crystalline alloy material amorphous, recrystallizing; use in motors and sensors |
| 01/02/2002 | EP1167551A1 Sub-zero heat treatment method of steel |
| 01/02/2002 | CN1077141C Process for production of steel component |
| 12/25/2001 | US6332938 Iron based member |
| 12/25/2001 | US6332325 Apparatus and method for strengthening articles of manufacture through cryogenic thermal cycling |
| 12/19/2001 | EP1164204A1 Cu precipitation strengthened steel and method for producing the same |
| 12/19/2001 | EP1163377A2 A method of heating metal strip and apparatus therefor |
| 12/19/2001 | CN1076404C Stainless steel wire and mfg. process |
| 12/13/2001 | WO2001068933A3 High performance carburizing stainless steel for high temperature use |
| 12/12/2001 | EP0880422B1 Cutting die and method of making |
| 12/06/2001 | WO2001092587A1 Hardened fe-ni alloy for making integrated circuit grids and method for making same |
| 12/06/2001 | CA2410456A1 Hardened fe-ni alloy for making integrated circuit grids and method for making same |
| 12/05/2001 | EP1159717A1 Magneto-acoustic marker for electronic article surveillance having reduced size and high signal amplitude |
| 12/05/2001 | EP1159462A1 An enhanced machinability precipitation-hardenable stainless steel for critical applications |
| 12/05/2001 | EP1015646B1 Austenitic stainless steel strips having good weldability as cast |
| 12/05/2001 | EP0860510B1 Material for magnetic shield, production method thereof, and color television tube |
| 11/29/2001 | US20010045426 Apparatus and method for heating a workpiece of metal |
| 11/29/2001 | DE10025808A1 Martensitisch-härtbarer Vergütungsstahl mit verbesserter Warmfestigkeit und Duktilität Maraging heat-treatment steel having improved heat resistance and ductility |
| 11/28/2001 | EP1158067A1 Martensitic hardenable heat treatable steel with improved thermal resistance and ductility |
| 11/28/2001 | EP0925379B1 Age hardenable alloy with a unique combination of very high strength and good toughness |
| 11/28/2001 | EP0880423B1 Cutting die and method of forming |
| 11/22/2001 | DE10102991A1 Device, for heating metal workpiece, has induction coil with variable frequency AC current, first frequency for heating predetermined workpiece region, second for heating separate object |
| 11/21/2001 | EP1156127A2 Steel for high bearing pressure-resistant member, having high machinability, and high bearing pressure-resistant member using same steel |
| 11/21/2001 | EP0909339B1 Method for processing billets from multiphase alloys |
| 11/21/2001 | CN1075118C Dual-phase high strength steel sheet with good toughness and weldability |
| 11/21/2001 | CN1075117C Ultra-high strength secondary hardening steels with excellent toughness and weldability |
| 11/15/2001 | WO2001086009A1 Steel composition, method for making same and parts produced from said compositions, particularly valves |
| 11/14/2001 | EP1154445A2 Alloy for high-performance rare earth permanent magnet and manufacturing method thereof |
| 11/13/2001 | US6316117 Stainless steel sheet having Cu-enriched grains dispersed in its matrix and/or a Cu-condensed layer |
| 11/13/2001 | US6314743 Cryogenic tempering process for PCB drill bits |
| 11/08/2001 | WO2001083840A1 Welding method, filler metal composition and article made therefrom |
| 11/08/2001 | WO2001083839A1 High tensile cold-rolled steel sheet excellent in ductility and in strain aging hardening properties, and method for producing the same |
| 11/08/2001 | WO2001083157A1 Method of brazing and article made therefrom |
| 11/08/2001 | DE10019042A1 Nitrogen alloyed steel produced by spray compacting used in the production of composite materials contains alloying additions of manganese and molybdenum |
| 11/07/2001 | EP1151146A1 High-hardness powder metallurgy tool steel and article made therefrom |
| 11/01/2001 | WO2001081644A1 Austenic steel |
| 11/01/2001 | WO2001081638A1 HEAT TREATMENT FOR 9Ni-4Co-0.03C TYPE STEELS |
| 10/31/2001 | EP1017861B1 Method for reducing the resistivity of the corrosion-induced oxide layer |
| 10/31/2001 | CN1074057C Ferritic heat-resistant steel having excellent high temp. strength and process for producing same |
| 10/30/2001 | US6309474 Solution treatment in vacuum furnace; aging, fluoridation to form fluoride layer; heating, nitriding by reacting with ammonia |
| 10/25/2001 | WO2001079575A1 Nitrogen alloyed steel, spray compacted steel, method for the production thereof and composite material produced from said steel |
| 10/24/2001 | EP1147238A1 Stainless steels |
| 10/17/2001 | EP1145259A2 High strength soft magnetic alloys |
| 10/17/2001 | CN1317595A Marmem |
| 10/16/2001 | CA2043146C Precipitation-hardenable tool steel |
| 10/10/2001 | CN1072732C Anti-microbial component and preparation method thereof |
| 10/03/2001 | CN1316017A Aperture grill material for color picture tube, production method thereof, aperture grill and picture tube |
| 10/03/2001 | CN1316016A Stainless steel plate for shadow mask and method for production thereof and shadow mask |
| 09/27/2001 | US20010024621 Bars with diameter up to 160mm; used in manufacture of heavy chains used for anchoring subterranean oil rigs; heat resistance |
| 09/27/2001 | US20010023723 Shape memory alloy |
| 09/27/2001 | US20010023716 Magnetically anisotropic sintered magnets |
| 09/26/2001 | EP1019549A4 Pitting resistant duplex stainless steel alloy with improved machinability |
| 09/26/2001 | CN1071801C Method for producing bake hardenable vanadium containing steel product and its products |
| 09/25/2001 | US6294031 Production method of a heat-treated steel member |
| 09/20/2001 | WO2001068933A2 High performance carburizing stainless steel for high temperature use |
| 09/19/2001 | EP1134300A2 Fe-Ni alloy |
| 09/19/2001 | EP1133579A1 Method for producing of a protective layer on a martensitic steel and utilisation of said steel coated with said protective layer |
| 09/19/2001 | EP0792379B1 Dual-phase steel and method thereof |
| 09/19/2001 | CN1071168C Method of forming cutting die |
| 09/18/2001 | US6290790 Method for reducing the resistivity of the corrosion-induced oxide layer, and applications |
| 09/12/2001 | EP1132501A2 Anodized cryogenically treated aluminum |
| 09/12/2001 | CN1312139A Stainless-steel band, method for inhibiting crack at edge of steel band and method for producing said steel band |
| 09/12/2001 | CN1070928C Oil tempering steel wire and making method thereof |
| 09/07/2001 | WO2001064966A1 Supermagnetostrictive alloy and method for preparation thereof |
| 09/05/2001 | EP1129230A1 New use of a stainless steel in seawater applications |
| 09/04/2001 | US6284191 Mixing aluminum powder and iron powder, shaping mixture into sheet, sintering sheet at temperature sufficient to react aluminum powder and iron powder to form iron aluminide, wherein sintering step is carried out in two stages |
| 08/30/2001 | US20010017173 Steel sheet with specified carbon, nickel, nitrogen, silicon, manganese, phosphorus, sulfur and boron content; for gasket |
| 08/29/2001 | CN2444959Y Auto-control low-temp modified treatment machine |
| 08/29/2001 | CN1310246A Antibiotic parts and its producing process |
| 08/29/2001 | CN1310245A Antibiotic parts and its producing process |
| 08/29/2001 | CN1070242C Method of process at least one component of soft magnetic material |
| 08/28/2001 | CA2044639C Method of making steel for springs |
| 08/23/2001 | US20010015244 Lengthening the life of a bearing for alternator to be used under high vibration and high load |