ClassID:

118951

C21D1/68 - CPC Classification

Classification description:

General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering Temporary coatings or embedding materials applied before or during heat treatment

Sub-classes:
Recent Application in this class:
#1
20230407432
2023-12-21

ANNEALING SEPARATOR COMPOSITION FOR GRAIN-ORIENTED ELECTRICAL STEEL SHEET, GRAIN-ORIENTED ELECTRICAL STEEL SHEET, AND METHOD FOR PRODUCING GRAIN-ORIENTED ELECTRICAL STEEL SHEET

#2
20230042915
2023-02-09

ANNEALING SEPARATOR FOR ORIENTED ELECTRICAL STEEL SHEET, ORIENTED ELECTRICAL STEEL SHEET, AND MANUFACTURING METHOD OF ORIENTED ELECTRICAL STEEL SHEET

#3
20220119910
2022-04-21

Annealing separating agent composition for grain-oriented electrical steel sheet, grain-oriented electrical steel sheet, and method for manufacturing grain oriented electrical steel sheet

#4
20220090226
2022-03-24

METHOD FOR PRODUCING GRAIN-ORIENTED ELECTRICAL STEEL SHEET

#5
20210053099
2021-02-25

Method for manufacturing cold-forged, extruded aluminum alloy tube

#6
20190323104
2019-10-24

Annealing separator composition for grain-oriented electrical steel sheet, grain-oriented electrical steel sheet, and method for producing grain-oriented electrical steel sheet

#7
20190276911
2019-09-12

Annealing separating agent composition for grain-oriented electrical steel sheet, grain-oriented electrical steel sheet, and method for manufacturing grain oriented electrical steel sheet

#8
20190185981
2019-06-20

Temporary corrosion protection layer

#9
20190134692
2019-05-09

Method for increasing the plastic deformability of a workpiece using an absorption agent

#10
20180371576
2018-12-27

Annealing separator for oriented electrical steel sheet, oriented electrical steel sheet, and manufacturing method of oriented electrical steel sheet

#11
20170283926
2017-10-05

Method of manufacturing Ni-base superalloy

#12
20170130308
2017-05-11

Method and system for using an irreversible thermo-chromatic indicator for quality assurance of a part subjected to heat treating

#13
20170050414
2017-02-23

Methods for the production of clad steel products

#14
20160304980
2016-10-20

Method of annealing steel sheets

#15
20150107719
2015-04-23

PARTIAL HEAT-TREATMENT METHOD USING DOUBLE METAL LAYER

#16
20150004305
2015-01-01

Method and system for using an irreversible thermo-chromatic indicator for quality assurance of a part subjected to heat treating

#17
20140246124
2014-09-04

Annealing separator for grain-oriented electromagnetic steel sheet

#18
20140216612
2014-08-07

Process for manufacturing steel, for hot forming or quenching in a tool, having improved ductility

#19
20140048182
2014-02-20

Surface treatment method for metal material and mold treated by surface treatment method

#20
20130340895
2013-12-26

Carburized steel part having excellent low cycle bending fatigue strength

#21
20130251998
2013-09-26

Graphene-coated steel sheet, and method for manufacturing same

#22
20130183542
2013-07-18

Process for producing an iron-tin layer on a packaging steel substrate

#23
20120328871
2012-12-27

Strip, sheet or blank suitable for hot forming and process for the production thereof

#24
20120295123
2012-11-22

Steel plate for cold forging and process for producing same

#25
20120241050
2012-09-27

NITRIDING PROCESS FOR MARAGING STEEL

#26
20120217168
2012-08-30

HIGH SPEED TIN PLATING PROCESS

#27
20120085467
2012-04-12

Fabrication process of coated stamped parts

#28
20120060979
2012-03-15

CARBURIZED STEEL PART HAVING EXCELLENT LOW CYCLE BENDING FATIGUE STRENGTH

#29
20110139308
2011-06-16

Method for the production and removal of a temporary protective layer for a cathodic coating

#30
20110108170
2011-05-12

METHOD OF PREPARATION PRIOR TO THE WELDING OF LITHIUM-ALUMINIUM ALLOY PRODUCTS

#31
20110076477
2011-03-31

Method for producing coated and hardened components of steel and coated and hardened steel strip therefor

#32
20100221572
2010-09-02

Steel, for hot forming or quenching in a tool, having improved ductility

#33
20090205348
2009-08-20

CONTROL VALVE FOR A VARIABLE CAPACITY COMPRESSOR

#34
20090101736
2009-04-23

Anti-oxidation spray methods and spray equipment for steel billets

#35
20090007997
2009-01-08

Methods and Systems for Preventing Iron Oxide Formulation and Decarburization During Steel Tempering

#36
20080283407
2008-11-20

High speed tin plating process

#37
20080233295
2008-09-25

Antioxidation coating for steel and antioxidation method using the same

#38
20070062612
2007-03-22

Carburizing treatment apparatus and method

#39
20060193733
2006-08-31

Method of manufacturing an assembled body composed of a plurality of members, manufacturing method of electromagnetic control valve, and control valve for variable capacity compressors