ClassID:

119106

C21D9/561 - CPC Classification

Classification description:

Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length; Furnaces for treating strips or wire; Continuous furnaces for strip or wire with a controlled atmosphere or vacuum

Recent Application in this class:
#1
20260085374
2026-03-26

JET-TYPE DIRECT-FIRED PREHEATING SYSTEM

#2
20250388989
2025-12-25

METHOD FOR HEATING STEEL SHEET, METHOD FOR PRODUCING COATED STEEL SHEET, DIRECT FIRED FURNACE, AND CONTINUOUS HOT-DIP GALVANIZING FACILITY

#3
20250230518
2025-07-17

HEAT TREATMENT APPARATUS

#4
20250163534
2025-05-22

HIGH PERFORMANCE THERMAL INSULATION OF A HEAT TREATMENT FURNACE FOR ANNEALING A CONTINUOUSLY MOVING STRIP

#5
20250034688
2025-01-30

Spot Welded Joint Made from Liquid Metal Embrittlement Resistant Zinc Coated Steel Sheet

#6
20250019791
2025-01-16

ATMOSPHERE FURNACE CONTROL

#7
20240229185
2024-07-11

Device and Method for Thermal Treatment of a Metal Strip

#8
20240110257
2024-04-04

GALVANNEALED STEEL SHEET

#9
20240102124
2024-03-28

High-resistance steel strip comprising a temperature homogenisation chamber

#10
20240093327
2024-03-21

CONTINUOUS ANNEALER FOR WIRE

#11
20230383375
2023-11-30

DIRECT FLAME PREHEATING SECTION FOR A CONTINUOUS METAL STRIP PROCESSING LINE

#12
20230323501
2023-10-12

Continuous hot-dip galvanizing apparatus

#13
20230287552
2023-09-14

METHOD FOR DIP-COATING A METAL STRIP

#14
20230265539
2023-08-24

CONTINUOUS ANNEALING LINE, CONTINUOUS HOT-DIP GALVANIZING LINE, AND STEEL SHEET PRODUCTION METHOD

#15
20230212708
2023-07-06

METHOD FOR RECRYSTALLISATION ANNEALING OF A NON-GRAIN-ORIENTED ELECTRIC STRIP

#16
20230193442
2023-06-22

METHOD FOR THE PREOXIDATION OF STRIP STEEL IN A REACTION CHAMBER ARRANGED IN A FURNACE CHAMBER

#17
20230158774
2023-05-25

Hot-dip coated steel sheet

#18
20230137133
2023-05-04

Method for the manufacturing of liquid metal embrittlement resistant zinc coated steel sheet

#19
20220213574
2022-07-07

PROCESSING LINE FOR THE CONTINUOUS PROCESSING OF METAL STRIPS HAVING A DUAL PURPOSE OF PRODUCING STRIPS THAT ARE ANNEALED AND DIP-COATED OR NOT COATED, AND CORRESPONDING COOLING TOWER AND METHOD FOR SWITCHING FROM ONE CONFIGURATION TO THE OTHER

#20
20220090230
2022-03-24

Steelmaking furnace with humidity control device

#21
20220090226
2022-03-24

METHOD FOR PRODUCING GRAIN-ORIENTED ELECTRICAL STEEL SHEET

#22
20220033931
2022-02-03

COOLING METHOD AND DEVICE FOR COOLING A WIRE AND CORRESPONDING WIRE-PROCESSING INSTALLATION

#23
20220033930
2022-02-03

Annealing line for a steel strip

#24
20210262057
2021-08-26

Device and method for manufacturing metal clad plates in way of continuous casting and rolling

#25
20210156018
2021-05-27

Method for producing a steel strip with improved bonding of metallic hot-dip coatings

#26
20210079494
2021-03-18

Method for reducing nitrogen oxides in strip treatment furnaces

#27
20200399749
2020-12-24

Method for dip-coating a metal strip

#28
20200377978
2020-12-03

High-strength galvanized steel sheet and method for manufacturing same

#29
20200377964
2020-12-03

Method for producing hot-dip galvanized steel sheet and continuous hot-dip galvanizing apparatus

#30
20200354807
2020-11-12

Galvannealed steel sheet

#31
20200338857
2020-10-29

Hot-dip coated steel sheet

#32
20200305242
2020-09-24

Methods of Cooling an Electrically Conductive Sheet During Transverse Flux Induction Heat Treatment

#33
20200263284
2020-08-20

Method for the manufacturing of liquid metal embrittlement resistant zinc coated steel sheet

#34
20200232063
2020-07-23

METHOD AND FURNACE FOR THERMALLY TREATING A HIGH-RESISTANCE STEEL STRIP COMPRISING A TEMPERATURE HOMOGENISATION CHAMBER

#35
20200216927
2020-07-09

Hot dipped high manganese steel and manufacturing method therefor

#36
20200199726
2020-06-25

Method for producing high-strength galvanized steel sheet

#37
20200131599
2020-04-30

Method for operating an annealing furnace

#38
20200131598
2020-04-30

CONTINUOUS ANNEALING OR GALVANISING LINE COMPRISING A TENSIONING BLOCK BETWEEN TWO CONSECUTIVE FURNACES

#39
20200040425
2020-02-06

Sealing device

#40
20190366471
2019-12-05

Method for producing a continuous strip-shaped composite material

#41
20190329307
2019-10-31

Method and device for producing a continuous strip-shaped composite material

#42
20190276913
2019-09-12

Method of continuously annealing a strip

#43
20190270160
2019-09-05

Method and device for producing a continuous strip-shaped composite material

#44
20190242002
2019-08-08

Manufacture of a stress relieved length of steel having an oxidised surface layer

#45
20190242000
2019-08-08

Method for manufacturing high-strength galvanized steel sheet

#46
20190169776
2019-06-06

Heat distribution management device for yarn treatment

#47
20190119777
2019-04-25

Method and furnace installation for heat treating metal strip

#48
20190119776
2019-04-25

Method for producing a metallic coated steel sheet

#49
20190010575
2019-01-10

Device and method for carrying out controlled oxidation of metal strips in a continuous furnace

#50
20190003002
2019-01-03

Ultra-high strength steel sheet having excellent phosphatability and bendability

#51
20180363094
2018-12-20

Method and device for reaction control

#52
20180347018
2018-12-06

High-strength air-hardening multiphase steel having excellent processing properties, and method for manufacturing a strip of said steel

#53
20180291476
2018-10-11

High-strength steel sheet and method for manufacturing the same

#54
20180265954
2018-09-20

Austenitic stainless steel

#55
20180265945
2018-09-20

Continuous annealing method for low coercive force cold-rolled electromagnetic pure iron plate and strip

#56
20180237896
2018-08-23

METHOD OF PRODUCING HOT-DIP GALVANIZED STEEL SHEET

#57
20180142339
2018-05-24

Method and device for reaction control

#58
20180100209
2018-04-12

Method and device for reaction control

#59
20180051356
2018-02-22

METHOD OF PRODUCING GALVANNEALED STEEL SHEET

#60
20180044759
2018-02-15

HIGH-STRENGTH AIR-HARDENING MULTI-PHASE STEEL COMPRISING OUTSTANDING PROCESSING PROPERTIES AND METHOD FOR THE PRODUCTION OF A STEEL STRIP FROM SAID STEEL

#61
20170369974
2017-12-28

Ultra-high strength, hot-dip galvanized steel sheet having excellent surface quality and coating adhesion

#62
20170175222
2017-06-22

Production line and tool arrangement for producing a hot formed component from a blank

#63
20170166990
2017-06-15

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

#64
20170130296
2017-05-11

Method of producing galvannealed steel sheet

#65
20170114427
2017-04-27

Method for directly producing pickling-free hot-plated sheet strip product from molten steel

#66
20160355903
2016-12-08

Apparatus for continuous annealing of strip and method for continuous annealing of same

#67
20160340755
2016-11-24

Hot-dip galvanized steel sheet and hot-dip galvannealed steel sheet having improved hole expansion ratio, and manufacturing methods thereof

#68
20160290721
2016-10-06

Continuous annealing furnace for annealing steel strip, method for continuously annealing steel strip, continuous hot-dip galvanizing facility, and method for manufacturing hot-dip galvanized steel strip

#69
20160265079
2016-09-15

Continuous annealing system and continuous annealing method

#70
20160230259
2016-08-11

Hot-dip galvanized steel sheets and galvannealed steel sheets that have good appearance and adhesion to coating and methods for producing the same (as amended)

#71
20160222500
2016-08-04

Hot-dip galvanized steel sheets and galvannealed steel sheets that have good appearance and adhesion to coating and methods for producing the same

#72
20160122845
2016-05-05

Hot stamp molded body, and method for producing hot stamp molded body

#73
20150361521
2015-12-17

Continuous annealing device and continuous hot-dip galvanising device for steel strip

#74
20150329946
2015-11-19

Galvannealed steel sheet and method of manufacturing the same

#75
20150322539
2015-11-12

METHOD FOR ADJUSTING FURNACE ATMOSPHERE IN CONTINUOUS ANNEALING FURNACE (AS AMENDED)

#76
20150315692
2015-11-05

Method for manufacturing galvanized steel sheet

#77
20150315691
2015-11-05

Facility having a continuous annealing furnace and a galvanization bath and method for continuously manufacturing hot-dip galvanized steel sheet

#78
20150167138
2015-06-18

Method and device for avoiding surface defects caused by zinc dust in a continuous strip galvanising process

#79
20150167113
2015-06-18

Method for continuously annealing steel strip, apparatus for continuously annealing steel strip, method for manufacturing hot-dip galvanized steel strip, and apparatus for manufacturing hot-dip galvanized steel strip

#80
20150159235
2015-06-11

Method for continuously annealing steel strip and method for manufacturing galvanized steel strip

#81
20150140218
2015-05-21

Continuous annealing furnace for annealing steel strip, method for continuously annealing steel strip, continuous hot-dip galvanizing facility, and method for manufacturing hot-dip galvanized steel strip

#82
20150140217
2015-05-21

Continuous annealing furnace for steel strip, continuous annealing method, continuous galvanizing apparatus and method for manufacturing galvanized steel strip (as amended)

#83
20150114528
2015-04-30

METHOD OF LOWERING DEW POINT OF AMIBIENT GAS WITHIN ANNEALING FURNACE, DEVICE THEREOF, AND METHOD OF PRODUCING COLD-ROLLED ANNEALED STEEL SHEET

#84
20150090182
2015-04-02

Continuous galvanizing line having an annealing furnace

#85
20150076751
2015-03-19

Method of reducing dew point of atmosphere gas in annealing furnace, apparatus for the same and method of producing cold-rolled and annealed steel sheet

#86
20150030881
2015-01-29

Method for manufacturing high strength galvanized steel sheet

#87
20150017474
2015-01-15

High strength galvanized steel sheet and method for manufacturing the same

#88
20150013851
2015-01-15

Continuous annealing furnace and continuous annealing method for steel strips

#89
20150013846
2015-01-15

Method for producing silicon steel normalizing substrate

#90
20140373980
2014-12-25

Ferrite-based stainless steel plate having excellent resistance against scale peeling, and method for manufacturing same

#91
20140203482
2014-07-24

Apparatus and method for the treatment of a flat steel product, taking place in throughput

#92
20140096578
2014-04-10

Method and apparatus for preparing steel stock before hot rolling

#93
20130306203
2013-11-21

High strength steel sheet and method for manufacturing the same

#94
20130305559
2013-11-21

Method for controlling a protective gas atmosphere in a protective gas chamber for the treatment of a metal strip

#95
20130304263
2013-11-14

Method and apparatus for controlling a furnace pressure of a continuous annealing furnace

#96
20130280551
2013-10-24

High strength galvanized steel sheet exhibiting excellent fatigue property

#97
20130146350
2013-06-13

Method for manufacturing high-nitrogen steel wire and overhead power line using same

#98
20130127095
2013-05-23

ANNEALING INSTALLATION WITH M-SHAPED STRIP TREATMENT TUNNEL

#99
20130048157
2013-02-28

Method for manufacturing high-Si cold rolled steel sheet having excellent chemical conversion properties

#100
20120325376
2012-12-27

High-strength cold-rolled steel sheet and method for producing the same

#101
20120264073
2012-10-18

Equipment and method for preheating a continuously moving steel strip

#102
20120186707
2012-07-26

Method for manufacturing of high strength cold rolled steel sheet of excellent phosphatability

#103
20120090737
2012-04-19

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

#104
20120018060
2012-01-26

High-strength galvanized steel sheet and method for manufacturing the same

#105
20120006579
2012-01-12

Method of fabricating an electric wire having a PTFE-based sheath, said electric wire, and a corresponding lubricant evaporation and sintering line

#106
20120006451
2012-01-12

CARBON STEEL SHEET HAVING EXCELLENT CARBURIZATION PROPERTIES, AND METHOD FOR PRODUCING SAME

#107
20110198786
2011-08-18

Method and device for the continuous creation of a bainite structure in a carbon steel, particularly in a strip steel

#108
20100212590
2010-08-26

Apparatus for manufacturing molten zinc coated steel sheet

#109
20100193081
2010-08-05

PROCESS FOR MANUFACTURING A GALVANNEALED STEEL SHEET BY DFF REGULATION

#110
20100186854
2010-07-29

Process for manufacturing a galvanized or a galvannealed steel sheet by DFF regulation

#111
20100173072
2010-07-08

Method and device for controlling oxidizing-reducing of the surface of a steel strip running continuously through a radiant tubes furnace for its galvanizing

#112
20100065167
2010-03-18

Annealing and pickling process

#113
20090194258
2009-08-06

THERMAL ISOLATION SCREEN FOR ISOLATING AN ELECTROMAGNETIC INDUCTOR, AND HEAT TREATMENT INSTALLATION COMPRISING SUCH A SCREEN

#114
20090188591
2009-07-30

Process for the heat treatment of steel strips

#115
20090158975
2009-06-25

DEVICE FOR SECURING A FURNACE PROVIDED WITH A RAPID COOLING AND HEATING SYSTEM OPERATING UNDER CONTROLLED ATMOSPHERE

#116
20090139616
2009-06-04

Method and device for the continuous creation of a bainite structure in a carbon steel, particularly in a strip steel

#117
20090123651
2009-05-14

Continuous Annealing and Hot Dip Plating Method and Continuous Annealing and Hot Dip Plating System of Steel sheet Containing Si

#118
20090065103
2009-03-12

METHOD AND APPARATUS FOR IMPROVED FORMABILITY OF GALVANIZED STEEL HAVING HIGH TENSILE STRENGTH

#119
20080283157
2008-11-20

Method of Production of Hot Dipped Hot Rolled Steel Strip

#120
20070181230
2007-08-09

Method for producing mat-surfaced austenitic stainless steel strips

#121
20070131060
2007-06-14

Automated control of razor blade colorization

#122
20070051438
2007-03-08

Process of production and production system of high strength galvannealed steel sheet

#123
20070000881
2007-01-04

Plasma processing installation, influenced by a magnetic field, for processing a continuous material or a workpiece

#124
20060163780
2006-07-27

Method and apparatus for cooling strip and wire material

#125
20060037679
2006-02-23

Atmosphere control during continuous heat treatment of metal strips