ClassID:

118953

C21D1/72 - 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 during chemical change of surfaces

Recent Application in this class:
#1
20240287634
2024-08-29

METHOD FOR PRODUCING AN OXIDATION PROTECTION COATING AT LEAST IN REGIONS ON A COMPONENT OF A THERMAL GAS TURBINE

#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
20220364197
2022-11-17

PREPARATION METHOD OF GLASSLESS GRAIN-ORIENTED SILICON STEEL AND PRODUCT THEREOF

#4
20210214831
2021-07-15

Protective surface on stainless steel

#5
20190100833
2019-04-04

Protective surface on stainless steel

#6
20190009317
2019-01-10

Endless metal ring manufacturing method and endless metal ring resin removal device

#7
20190009316
2019-01-10

Endless metal ring manufacturing method and endless metal ring resin removal device

#8
20180371576
2018-12-27

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

#9
20170321295
2017-11-09

METHOD FOR HOT OR WARM FORMING A WORKPIECE AND PRODUCTION PLANT FOR HOT OR WARM FORMING A WORKPIECE

#10
20150083278
2015-03-26

High-strength hot-dip galvanized steel sheet excellent in impact resistance property and manufacturing method thereof, and high-strength alloyed hot-dip galvanized steel sheet and manufacturing method thereof

#11
20150079419
2015-03-19

Process for manufacturing a recovery annealed coated steel substrate for packaging applications and a packaging steel product produced thereby

#12
20150044500
2015-02-12

Process for manufacturing a recovery annealed coated steel substrate for packaging applications and a packaging steel product produced thereby

#13
20140254736
2014-09-11

Method for producing, from a preform made of austenitic stainless steel with a low carbon content, a wear-resistant and corrosion-resistant cladding for a nuclear reactor, corresponding cladding and corresponding control cluster

#14
20140247915
2014-09-04

METHOD FOR PRODUCING A WEAR-RESISTANT AND CORROSION-RESISTANT STAINLESS STEEL PART FOR A NUCLEAR REACTOR, CORRESPONDING PART AND CORRESPONDING CONTROL CLUSTER

#15
20140048182
2014-02-20

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

#16
20140027083
2014-01-30

Evaporating material and method of manufacturing the same

#17
20130251998
2013-09-26

Graphene-coated steel sheet, and method for manufacturing same

#18
20130183542
2013-07-18

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

#19
20130174946
2013-07-11

High strength steel sheet and method for manufacturing the same

#20
20120279868
2012-11-08

MANUFACTURING GALVANNEALED SHEETS BY HEAT-TREATING ELECTROLYTICALLY FINISHED SHEETS

#21
20120241050
2012-09-27

NITRIDING PROCESS FOR MARAGING STEEL

#22
20120217168
2012-08-30

HIGH SPEED TIN PLATING PROCESS

#23
20110189498
2011-08-04

EVAPORATING MATERIAL AND METHOD OF MANUFACTURING THE SAME

#24
20110186186
2011-08-04

Iron and steel material having quenched surface layer part, method for producing the iron and steel material, and quenched component

#25
20110108170
2011-05-12

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

#26
20100051145
2010-03-04

EGR COOLER FOR VEHICLES AND METHOD OF MANUFACTURING THE SAME

#27
20090007997
2009-01-08

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

#28
20080283407
2008-11-20

High speed tin plating process

#29
20060042837
2006-03-02

Maintaining carburized case during neutral to the core heat treatment processes

#30
20050257857
2005-11-24

Surface on a stainless steel matrix

#31
20050077210
2005-04-14

Thermal cracking process using tubes, pipes, and coils made of novel stainless steel matrix