ClassID:

118920

C21D1/185 - CPC Classification

Classification description:

General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering; Hardening ; Quenching with or without subsequent tempering from an intercritical temperature

Recent Application in this class:
#1
20260151857
2026-06-04

Method for producing a press-hardened laser welded steel part and press-hardened laser welded steel part

#2
20250122590
2025-04-17

METHOD FOR PRODUCING A COATED STEEL SHEET HAVING IMPROVED STRENGHT, DUCTILITY AND FORMABILITY

#3
20240227080
2024-07-11

Method for producing a press-hardened laser welded steel part and press-hardened laser welded steel part

#4
20230243014
2023-08-03

Galvanized steel sheet, member, and method for producing them

#5
20230127243
2023-04-27

Steel sheet, member, and method for producing them

#6
20220282348
2022-09-08

METHOD FOR MANUFACTURING A HIGH STRENGTH STEEL PRODUCT AND STEEL PRODUCT THEREBY OBTAINED

#7
20220064767
2022-03-03

Cryogenic pressure vessels formed from low-carbon, high-strength 9% nickel steels

#8
20220002832
2022-01-06

Production method for high-strength steel sheet

#9
20210164066
2021-06-03

Method for producing metallic components having adapted component properties

#10
20210053154
2021-02-25

Method for producing a press-hardened laser welded steel part and press-hardened laser welded steel part

#11
20210032714
2021-02-04

Method of shaping an article from a zinc or zinc alloy coated steel blank

#12
20200332397
2020-10-22

Steel sheet

#13
20200165694
2020-05-28

HIGH ELONGATION PRESS HARDENED STEEL AND MANUFACTURE OF THE SAME

#14
20190226067
2019-07-25

High-strength steel sheet and production method therefor

#15
20180347006
2018-12-06

METHOD FOR DERIVING COOLING TIME WHEN QUENCHING STEEL MATERIAL, METHOD FOR QUENCHING STEEL MATERIAL, AND METHOD FOR QUENCHING AND TEMPERING STEEL MATERIAL

#16
20180327884
2018-11-15

Method for manufacturing high-strength galvanized steel sheet and high-strength galvanized steel sheet

#17
20170321294
2017-11-09

Method for manufacturing a high strength steel product and steel product thereby obtained

#18
20170306429
2017-10-26

Method for the heat treatment of a manganese steel product, and manganese steel product having a special alloy

#19
20170233847
2017-08-17

Method for Producing a Coated Steel Sheet having Improved Strength, Ductility and Formability

#20
20170144207
2017-05-25

HOT FORMING LINE AND METHOD FOR PRODUCING A HOT FORMED AND PRESS HARDENED MOTOR VEHICLE PART

#21
20160319389
2016-11-03

Hot-formed member and manufacturing method of same

#22
20160002746
2016-01-07

Method for heat-treating a manganese steel product and manganese steel product

#23
20150225822
2015-08-13

Abrasion resistant steel plate having excellent low-temperature toughness and excellent corrosive wear resistance

#24
20150114199
2015-04-30

Methods of thermo-mechanically processing tool steel and tools made from thermo-mechanically processed tool steels

#25
20140299239
2014-10-09

Stainless steel and method for manufacturing same

#26
20140212687
2014-07-31

Method of thermomechanical shaping a final product with very high strength and a product produced thereby

#27
20140124104
2014-05-08

Hot forming line and method for producing a hot formed and press hardened motor vehicle part

#28
20120211128
2012-08-23

Method for making a steel part of multiphase microstructure

#29
20110226393
2011-09-22

Manufacturing method of a hot-pressed steel plate member

#30
20110132502
2011-06-09

Method for producing a formed steel part having a predominantly ferritic-bainitic structure

#31
20110088818
2011-04-21

Waste Water Safety Element Torque Limiter and Method of Construction

#32
20110037207
2011-02-17

Hybrid method manufacturing apparatus for torsion beam

#33
20110036470
2011-02-17

TORSION BEAM MANUFACTURING METHOD USING HYBRID METHOD

#34
20110000584
2011-01-06

Process for forming steel

#35
20100326572
2010-12-30

METHOD FOR PRODUCING LOW YIELD STRENGTH COLD ROLLED STEEL SHEET EXCELLENT IN UNIFORMITY

#36
20100101296
2010-04-29

Method of reheating steel part

#37
20100068549
2010-03-18

Seamless precision steel tubes with improved isotropic toughness at low temperature for hydraulic cylinders and process for obtaining the same

#38
20100026048
2010-02-04

Method of thermomechanical shaping a final product with very high strength and a product produced thereby

#39
20090320971
2009-12-31

Method for manufacturing spheroidal cast iron mechanical components

#40
20090320968
2009-12-31

DIFFERENTIAL HEAT SHAPING AND HARDENING USING INFRARED LIGHT

#41
20090229417
2009-09-17

Methods of thermo-mechanically processing tool steel and tools made from thermo-mechanically processed tool steels

#42
20080308194
2008-12-18

Method for making a steel part of multiphase microstructure

#43
20080277030
2008-11-13

Composition and Process for Enhanced Properties of Ferrous Components

#44
20080236709
2008-10-02

COLD-WORKED STEELS WITH PACKET-LATH MARTENSITE/AUSTENITE MICROSTRUCTURE

#45
20080053576
2008-03-06

High-strength hot-dip galvanized steel sheet and method for producing the same

#46
20070116975
2007-05-24

Seamless expandable oil country tubular goods and manufacturing method thereof

#47
20070023113
2007-02-01

Dual-phase steel sheet excellent in stretch flange formability and production method thereof

#48
20060219335
2006-10-05

Excellent-strength and excellent-toughness steel and the method of manufacturing the same

#49
20060157160
2006-07-20

Machinable austempered cast iron article having improved machinability, fatigue performance, and resistance to environmental cracking

#50
20060144482
2006-07-06

Method of producing a cold-rolled band of dual-phase steel with a ferritic/martensitic structure and band thus obtained

#51
20060124907
2006-06-15

High-strength hop-dip galvanized steel sheet

#52
20060011274
2006-01-19

Method for producing steel with retained austenite

#53
20050257862
2005-11-24

Production method of warm- or hot-formed product

#54
20050115643
2005-06-02

Process for the production of grain oriented electrical steel strips

#55
20050087269
2005-04-28

Method for producing line pipe

#56
20050081966
2005-04-21

High tensile strength steel sheet excellent in processibility and process for manufacturing the same