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Class Information
Number: 148/233
Name: Metal treatment > Process of modifying or maintaining internal physical structure (i.e., microstructure) or chemical properties of metal, process of reactive coating of metal and process of chemical-heat removing (e.g., flame-cutting, etc.) or burning of metal > Carburizing or nitriding using externally supplied carbon or nitrogen source > Iron(fe) or iron base alloy > With post-carburizing heating or quenching
Description: Process which includes a post-carburizing heating or sudden cooling (i.e., quenching) operation.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8608870 Carburization heat treatment method and method of use Dec. 17, 2013
8580051 Method of processing steel and steel article Nov. 12, 2013
8535457 Rolling member, rolling bearing and process for manufacturing rolling member Sep. 17, 2013
8430974 Carburized and induction-hardened component Apr. 30, 2013
8388767 Carbonitriding low manganese medium carbon steel Mar. 5, 2013
8308873 Method of processing steel and steel article Nov. 13, 2012
8293028 Method for carburizing steel components Oct. 23, 2012
8137482 Carburization heat treatment method and method of use Mar. 20, 2012
8118949 Copper precipitate carburized steels and related method Feb. 21, 2012
8114224 Process for the production of an articulated structural part having improved wear resistance Feb. 14, 2012
7998282 Heat treatment method of steel components, steel components and manufacture method of steel components Aug. 16, 2011
7988796 Sheave member for belt-type continuously variable transmission and method of manufacturing the same Aug. 2, 2011
7828910 Method and process for thermochemical treatment of high-strength, high-toughness alloys Nov. 9, 2010
7632453 Gas quenching method using a recycling facility Dec. 15, 2009
7559995 Method for heat treatment of metal workpieces as well as a heat-treated workpiece Jul. 14, 2009
7468107 Carburizing method Dec. 23, 2008
7419553 Fuel injection valve for internal combustion engines and a method for hardening the said valve Sep. 2, 2008
7396423 Method for manufacturing steel plate having superior toughness in weld heat-affected zone Jul. 8, 2008
7207933 Carburized roller member made of high carbon chromium steel Apr. 24, 2007
7185619 Rocker arm and method of manufacturing the same Mar. 6, 2007
7169238 Carbide method and article for hard finishing resulting in improved wear resistance Jan. 30, 2007
7122086 Rolling support device and method for manufacturing the same Oct. 17, 2006
7029540 Method of gas carburizing Apr. 18, 2006
6982120 Hardened steel components and process of treating the same Jan. 3, 2006
6942739 Reactive heat treatment to form pearlite from an iron containing article Sep. 13, 2005
6858096 Rolling element for a continuously variable transmission (CVT), a CVT using the rolling element and a method for producing the rolling element Feb. 22, 2005
6800144 Process for producing retainer for constant velocity joint possessing improved machinability and flexural strength Oct. 5, 2004
6790295 Method of improving sliding surfaces in anti-seizure property Sep. 14, 2004
6699333 Case hardened steel with high tempering temperature, method for obtaining same and parts formed with said steel Mar. 2, 2004
6641680 Process for producing inner race for constant velocity joint having improved workability and strength Nov. 4, 2003
6464801 Advanced case carburizing secondary hardening steels Oct. 15, 2002
6451137 Method of quenching after a low-pressure carburization Sep. 17, 2002
6447619 High surface pressure resistant steel parts and methods of producing same Sep. 10, 2002
6312529 Steel compositions and methods of processing for producing cold-formed and carburized components with fine-grained microstructures Nov. 6, 2001
6309475 Rolling element and producing method Oct. 30, 2001
6306227 Rolling bearing Oct. 23, 2001
6302971 Process for making moveable pulley half Oct. 16, 2001
6258179 Carburized parts, method for producing same and carburizing system Jul. 10, 2001
6251197 Rolling or sliding parts Jun. 26, 2001
6153030 Method for the manufacture of hollow shafts Nov. 28, 2000
6149734 Method for heat treatment of steel Nov. 21, 2000
6146472 Method of making case-carburized steel components with improved core toughness Nov. 14, 2000
6145185 Method for forming a connecting pipe of a high pressure connector for fluid Nov. 14, 2000
6126897 Carburizing steel and steel products manufactured making use of the carburizing steel Oct. 3, 2000
6074324 Toroidal type continuously variable transmission Jun. 13, 2000
6051080 Rolling element used for toroidal-type continuously variable transmission and method for producing same Apr. 18, 2000
6019857 Carburized hardening process and carburized hardened power transmission members Feb. 1, 2000
6017641 Coil spring resistive to delayed fracture and manufacturing method of the same Jan. 25, 2000
5944916 Method of heat treatment for steel Aug. 31, 1999
5910223 Steel article having high hardness and improved toughness and process for forming the article Jun. 8, 1999

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