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Class Information
Number: 148/229
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 > Utilizing fused agent or media > With post-carburizing quenching
Description: Process which includes a post-carburizing sudden cooling (i.e., quenching) operation.

Patents under this class:

Patent Number Title Of Patent Date Issued
7559995 Method for heat treatment of metal workpieces as well as a heat-treated workpiece Jul. 14, 2009
7481896 Torque transferring low carbon steel shafts with refined grain size Jan. 27, 2009
7185619 Rocker arm and method of manufacturing the same Mar. 6, 2007
6800144 Process for producing retainer for constant velocity joint possessing improved machinability and flexural strength Oct. 5, 2004
6746546 Low temperature nitriding salt and method of use Jun. 8, 2004
6641680 Process for producing inner race for constant velocity joint having improved workability and strength Nov. 4, 2003
5944916 Method of heat treatment for steel Aug. 31, 1999
5336338 Bearing components and process for producing same Aug. 9, 1994
4853046 Ion carburizing Aug. 1, 1989

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