C21D - Modifying the physical structure of ferrous metals; General devices for heat treatment of ferrous or non-ferrous metals or alloys; Making metal malleable by decarburisation, tempering, or other treatments

More topics under "C21D - Modifying the physical structure of ferrous metals; General devices for heat treatment of ferrous or non-ferrous metals or alloys; Making metal malleable by decarburisation, tempering, or other treatments" (91,165)
C21D 1 - General methods or devices for heat treatment, e.g. annealing, hardening, quenching, tempering (27,435)
C21D 10 - Modifying the physical properties by methods other than heat treatment or deformation (1,192)
C21D 11 - Process control or regulation for heat treatments (3,719)
C21D 3 - Diffusion processes for extraction of non-metals; Furnaces therefor (566)
C21D 5 - Heat treatment of cast-iron (891)
C21D 6 - Heat treatment of ferrous alloys (4,815)
C21D 7 - Modifying the physical properties of iron or steel by deformation (3,811)
C21D 8 - Modifying the physical properties by deformation combined with, or followed by, heat treatment (18,654)
C21D 9 - Heat treatment, e.g. annealing, hardening, quenching, tempering, adapted for particular articles; Furnaces therefor (30,082)

Patents for C21D - Modifying the physical structure of ferrous metals; General devices for heat treatment of ferrous or non-ferrous metals or alloys; Making metal malleable by decarburisation, tempering, or other treatments (68)
05/2010
05/26/2010	CN1735699B Surface hardened stainless steel with improved wear resistance and low static friction properties
03/2010
03/16/2010	US7678208 Method of hot stamping and hardening a metal sheet
12/2009
12/08/2009	CA2349693C Tower furnace for heat treatment of metal strips
07/2009
07/09/2009	US20090174125 Method and arrangement for heating extended steel products
08/2008
08/20/2008	EP1660316A4 Silver alloys for optical data storages and optical media containing same
11/2007
11/15/2007	US20070261769 Obtaining a product that has good tolerance in the soft zone by havingthe tools in that area have < 25 % discrete smaller contact surfaces withthe product; dimensional stability' accuracy; structural beams for vehicles;ductility; noncracking; cost efficiency
10/2007
10/03/2007	EP1838888A2 Ductile iron and method for manufacturing ductile iron for engineering components requiring strength and toughness
09/2007
09/18/2007	US7270719 Method for manufacturing surface hardened stainless steel with improved wear resistance and low static friction properties
08/2007
08/01/2007	EP1812608A1 Method and arrangement for heating extended steel products.
06/2007
06/27/2007	EP1799871A1 A method of hot stamping and hardening a metal sheet
05/2007
05/18/2007	WO2006072663A3 Ductile iron and method for manufacturing ductile iron for engineering components requiring strength and toughness
10/2006
10/25/2006	EP1579021A4 Martensitic alloy steels having intermetallic compounds and precipitates as a substitute for cobalt
09/2006
09/20/2006	CN1276204C Method of manufacturing centrifugal spheroidal cast iron pipe with plastic lining
07/2006
07/13/2006	WO2006072663A2 Ductile iron and method for manufacturing ductile iron for engineering components requiring strength and toughness
05/2006
05/31/2006	EP1660316A2 Silver alloys for optical data storages and optical media containing same
05/04/2006	WO2006046919A1 Method and arrangement for heating extended steel products.
05/04/2006	CA2587035A1 Method and arrangement for heating extended steel products
04/2006
04/13/2006	WO2006038868A1 A method of hot stamping and hardening a metal sheet
04/13/2006	DE102004049074A1 Kaltaushärtende Aluminiumgusslegierung und Verfahren zur Herstellung eines Aluminiumgussteils Cold-setting casting aluminum alloy and method for producing an aluminum casting
04/12/2006	EP1645647A1 Cold age hardenable Al-alloy and process of the manufacture of a cast part
02/2006
02/15/2006	CN1735699A Surface hardened stainless steel with improved wear resistance and low static friction properties
12/2005
12/07/2005	EP1601800A1 Suface hardened stainless steel with improved wear resistance and low static friction properties
11/2005
11/03/2005	WO2005024070A3 Silver alloys for optical data storages and optical media containing same
09/2005
09/28/2005	EP1579021A2 Martensitic alloy steels having intermetallic compounds and precipitates as a substitute for cobalt
07/2005
07/28/2005	US20050161132 inductor rings having dielectrics used for hardening gear teeth using induction heating
07/27/2005	CA2494411A1 Method and apparatus for case hardening a work piece
03/2005
03/17/2005	WO2005024070A2 Silver alloys for optical data storages and optical media containing same
03/17/2005	CA2537240A1 Silver alloys for optical data storages and optical media containing same
03/03/2005	US20050048251 Silver alloys for optical data storage and optical media containing same
01/2005
01/05/2005	CN1560502A Centrifugal spheroidal cast iron pipe with plastic lining
10/2004
10/07/2004	US20040197581 Surface hardened stainless steel with improved wear resistance and low static friction properties
09/2004
09/30/2004	WO2004044250B1 Martensitic alloy steels having intermetallic compounds and precipitates as a substitute for cobalt
08/2004
08/12/2004	WO2004044250A3 Martensitic alloy steels having intermetallic compounds and precipitates as a substitute for cobalt
07/2004
07/29/2004	WO2004063399A1 Suface hardened stainless steel with improved wear resistance and low static friction properties
05/2004
05/27/2004	WO2004044250A2 Martensitic alloy steels having intermetallic compounds and precipitates as a substitute for cobalt
04/2004
04/20/2004	US6723182 Martensitic alloy steels having intermetallic compounds and precipitates as a substitute for cobalt
09/2002
09/18/2002	CN1091166C Cold-rolled strip and hot-dip coated cold-rolled steel strip for use as building material, mfg. method thereof
07/2002
07/30/2002	US6425756 Tower furnace for heat treatment of metal strips
01/2002
01/03/2002	US20020000180 Tower furnace for heat treatment of metal strips
01/02/2002	EP1167554A2 Tower-type furnace for heat treating of metal strip
05/2001
05/08/2001	US6228188 Heat treatment of a steel wire
02/2000
02/02/2000	CN1049011C Heat treatment of steel wire
10/1999
10/06/1999	CN1230602A Cold-rolled steel strip and hot-dip coated cold-rolled steel strip for use as building material manufacturing method thereof
02/1998
02/11/1998	EP0474704B1 Pre-heating and pre-reduction of metal oxide ore using high temperature off-gases
01/1998
01/14/1998	EP0628087B1 Method for continuous recrystallization annealing of a steel strip
11/1997
11/25/1997	US5690757 Cold rolling, annealing; drawing; pulling tension
05/1995
05/24/1995	CN1028544C Pre-heating and pre-reduction of metal oxide ore using high temperature off-gases
12/1994
12/14/1994	EP0628087A1 Method for continuous recrystallization annealing of a steel strip
12/1993
12/01/1993	EP0474704A4 Pre-heating and pre-reduction of metal oxide ore using high temperature off-gases
09/1993
09/30/1993	WO1993019211A1 Method for continuous recrystallization annealing of a steel strip
09/30/1993	CA2131282A1 Method for continuous recrystallization annealing of a steel strip
06/1993
06/30/1993	CN1021483C Rotary hearth multi-chamber, multipurpose furnace system
04/1993
04/13/1993	US5201940 Pre-heating and pre-reduction of a metal oxide
02/1993
02/17/1993	CN1069071A Heat treatment of steel wire
01/1993
01/27/1993	EP0524689A1 Heat treatment of steel wire
03/1992
03/18/1992	EP0474704A1 Pre-heating and pre-reduction of metal oxide ore using high temperature off-gases
10/1991
10/29/1991	CA1291332C Rotary hearth multi-chamber, multi-purpose furnace system
12/1990
12/13/1990	WO1990015162A1 Pre-heating and pre-reduction of metal oxide ore using high temperature off-gases
12/13/1990	CA2047188A1 Pre-heating and pre-reduction of metal oxide ore using high temperature off-gases
12/12/1990	CN1047701A Pre-heating and pre-reduction of metal oxide ore using high temperature off-gases
03/1990
03/28/1990	EP0359756A1 Rotary hearth multi-chamber multi-purpose furnace system
10/1988
10/19/1988	CN88101735A Rotary hearth multi-chamber, multi-purpose furnace system
10/06/1988	WO1988007589A1 Rotary hearth multi-chamber multi-purpose furnace system
08/1988
08/16/1988	US4763880 Rotary hearth multi-chamber, multi-purpose furnace system
06/1987
06/16/1987	EP0225414A1 A new steel
08/1985
08/21/1985	EP0151838A1 Heat treating hardenable carbon steel pipe
01/1981
01/06/1981	US4243439 Process of quenching metal pieces and product produced
08/1977
08/16/1977	US4042515 Dimeric carboxylic acids in mineral oil