Patents-Review.com
ClassID:

119076 ⎘

C21D9/04 - CPC Classification

Classification description:

Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rails

Sub-classes:
Recent Application in this class:
#1
20260138653
2026-05-21

OVERHEAD RAIL AND TROLLEY SYSTEM

 #2
20250340961
2025-11-06

FIRMWARE-BASED OUT-OF-ORDER COMMAND SCHEDULER

 #3
20250305078
2025-10-02

METHOD FOR MANUFACTURING A RAIL AND CORRESPONDING RAIL

 #4
20250257420
2025-08-14

FIRMWARE-BASED OUT-OF-ORDER COMMAND SCHEDULER

 #5
20250003020
2025-01-02

FIRMWARE-BASED OUT-OF-ORDER COMMAND SCHEDULER

 #6
20240279784
2024-08-22

METHOD FOR PRODUCING HYPEREUTECTOID STEEL RAIL RESISTANT TO CONTACT FATIGUE

 #7
20240254580
2024-08-01

Forced air cooling for cooling long steel products

 #8
20240218478
2024-07-04

Gradient-structured ultra-fine bainitic low-alloy rail steel and preparation method thereof

 #9
20240150971
2024-05-09

Frog for switches and crossings

 #10
20240068063
2024-02-29

MODERATE-STRENGTH STEEL RAIL AND PRODUCTION METHOD THEREOF

 #11
20240002966
2024-01-04

STEEL FOR RAILS AND A METHOD OF MANUFACTURING OF A RAIL THEREOF

 #12
20230416858
2023-12-28

TRACK PART AND METHOD FOR PRODUCING A TRACK PART

 #13
20230279517
2023-09-07

RAIL HAVING EXCELLENT FATIGUE CRACK PROPAGATION RESISTANCE CHARACTERISTICS, AND METHOD OF PRODUCING SAME

 #14
20230250505
2023-08-10

RAIL AND METHOD FOR PRODUCING THE SAME

 #15
20230221231
2023-07-13

HARDNESS PREDICTION METHOD OF HEAT HARDENED RAIL, THERMAL TREATMENT METHOD, HARDNESS PREDICTION DEVICE, THERMAL TREATMENT DEVICE, MANUFACTURING METHOD, MANUFACTURING FACILITIES, AND GENERATING METHOD OF HARDNESS PREDICTION MODEL

 #16
20220396294
2022-12-15

OVERHEAD RAIL AND TROLLEY SYSTEM

 #17
20220195550
2022-06-23

AIR-HARDENED MACHINE COMPONENTS

 #18
20220127689
2022-04-28

Deeply-hardened-surface turnout rail with high degree of undercooling and the preparation method thereof

 #19
20220120039
2022-04-21

Rail

 #20
20220119912
2022-04-21

Method for optimizing microstructure of rail welded joint

 #21
20220112571
2022-04-14

METHOD OF PRODUCING STEEL MATERIAL, APPARATUS THAT COOLS STEEL MATERIAL, AND STEEL MATERIAL

 #22
20220064746
2022-03-03

POST-WELD HEAT TREATMENT METHOD FOR 1,300 MPa-LEVEL LOW-ALLOY HEAT TREATED STEEL RAIL

 #23
20220042128
2022-02-10

METHOD OF MAKING A TEE RAIL HAVING A HIGH STRENGTH BASE

 #24
20210348251
2021-11-11

Cooling device and production method for rail

 #25
20210348246
2021-11-11

Method for fixing a rail of a rail track with thermal conditioning of a rail portion, and associated rail machine

 #26
20210269901
2021-09-02

Rail

 #27
20210102277
2021-04-08

Rail and method for manufacturing same

 #28
20210024149
2021-01-28

Track link for a track joint assembly having wear band with lengthwise-varied hardness and method of making same

 #29
20200318213
2020-10-08

A COATED STEEL SUBSTRATE

 #30
20200291498
2020-09-17

METHOD FOR MANUFACTURING A RAIL AND CORRESPONDING RAIL

 #31
20200277682
2020-09-03

Method for producing rail

 #32
20200269632
2020-08-27

Railway wheel

 #33
20200232167
2020-07-23

FROG FOR SWITCHES AND CROSSINGS

 #34
20200199703
2020-06-25

TRACK PART AND METHOD FOR PRODUCING A TRACK PART

 #35
20200199698
2020-06-25

METHOD FOR REINFORCING RAIL BY LASER AND AUXILIARY HEAT SOURCE EFFICIENT HYBRID CLADDING

 #36
20200079446
2020-03-12

Track link for a track joint assembly having wear band with lengthwise-varied hardness

 #37
20200002780
2020-01-02

RAIL AND METHOD FOR PRODUCING SAME

 #38
20190338386
2019-11-07

Method of making high strength steel crane rail

 #39
20190249280
2019-08-15

Method for selecting rail steel and wheel steel

 #40
20190234144
2019-08-01

7000 series aluminum alloy ladder, multipurpose ladder and method

 #41
20190233916
2019-08-01

Post-heating treatment device and post-heating treatment method

 #42
20190233909
2019-08-01

Post-heating treatment device and post-heating treatment method

 #43
20190226040
2019-07-25

HYPEREUTECTOID RAIL AND MANUFACTURING METHOD THEREOF

 #44
20190161918
2019-05-30

Onsite steel rail laser processing engineering vehicle

 #45
20190161839
2019-05-30

Rail

 #46
20190106762
2019-04-11

Rail manufacturing method and manufacturing equipment

 #47
20190106761
2019-04-11

RAIL OF RAILWAY WITH PASSENGER AND FREIGHT MIXED TRAFFIC AND MANUFACTURING METHOD THEREOF

 #48
20190105693
2019-04-11

High-toughness and plasticity hypereutectoid rail and manufacturing method thereof

 #49
20190100822
2019-04-04

Method for joining steel rails with controlled weld heat input

 #50
20190061041
2019-02-28

Mobile flash butt welding method for 136RE+SS heat-treated rail

 #51
20180363085
2018-12-20

SYSTEM AND METHOD FOR THERMAL PROCESSING CASTING MATERIAL

 #52
20180327880
2018-11-15

METHOD OF PRODUCING STEEL MATERIAL, APPARATUS THAT COOLS STEEL MATERIAL, AND STEEL MATERIAL

 #53
20180251866
2018-09-06

Rail cooling device

 #54
20180148897
2018-05-31

Friction apparatus

 #55
20180112284
2018-04-26

Method of Making High Strength Steel Crane Rail

 #56
20180094333
2018-04-05

Stress-relief heat treatment apparatus

 #57
20180016654
2018-01-18

Method and Device for Production of Heat Treated Welded Rail for Rail Transport and Rail Produced Therewith

 #58
20180001915
2018-01-04

RAILCAR WELDING TECHNIQUE

 #59
20170369975
2017-12-28

Rail

 #60
20170369961
2017-12-28

Rail

 #61
20170349986
2017-12-07

Copper Containing Rail Steel

 #62
20170349968
2017-12-07

Inline laser-based system and method for thermal treatment of continuous products

 #63
20170283895
2017-10-05

RAIL MANUFACTURING METHOD AND RAIL MANUFACTURING APPARATUS

 #64
20170233843
2017-08-17

Head hardened rail manufacturing method and manufacturing apparatus

 #65
20170101692
2017-04-13

RAIL AND METHOD FOR MANUFACTURING SAME

 #66
20170073793
2017-03-16

Heat treatment device, heat treatment method, and rail steel

 #67
20170051373
2017-02-23

Rail and production method therefor

 #68
20170044721
2017-02-16

Hypereutectoid steel rail and preparation method thereof

 #69
20170044634
2017-02-16

Rail and production method therefor

 #70
20170016097
2017-01-19

Copper-nickel-zinc alloy containing silicon

 #71
20160194730
2016-07-07

HIGH-IMPACT-TOUGHNESS STEEL RAIL AND PRODUCTION METHOD THEREOF

 #72
20160194729
2016-07-07

HIGH-STRENGTH AND HIGHLY FATIGUE-RESISTANT STEEL RAIL AND PRODUCTION METHOD THEREOF

 #73
20160083820
2016-03-24

Pearlitic rail and method for manufacturing pearlitic rail

 #74
20160060736
2016-03-03

PEARLITIC STEEL RAIL WITH HIGH STRENGTH AND TOUGHNESS AND PRODUCING METHOD THEREOF

 #75
20160047009
2016-02-18

System for thermal treatment of rails

 #76
20160040263
2016-02-11

Rail manufacturing method and manufacturing equipment

 #77
20160010188
2016-01-14

Heat treatment method for increasing the depth of hardening layer in a steel rail and steel rail obtained with the method

 #78
20150368765
2015-12-24

Nano-pearlite rail and process for manufacturing same

 #79
20150322553
2015-11-12

BAINITIC STEEL RAIL CONTAINING TRACE AMOUNTS OF CARBIDES AND PRODUCING METHOD OF THE SAME

 #80
20150299832
2015-10-22

High carbon steel rail with enhanced ductility

 #81
20150257206
2015-09-10

Electric Induction Heating of a Rail Head with Non-Uniform Longitudinal Temperature Distribution

 #82
20150232968
2015-08-20

Method for heat treatment of hypereutectoid steel rail

 #83
20150218759
2015-08-06

METHOD FOR PRODUCING BAINITIC RAIL STEELS, TRACK ELEMENT AND INSTALLATION FOR CARRYING OUT THE METHOD

 #84
20150211087
2015-07-30

STRESS-RELIEF HEAT TREATMENT APPARATUS

 #85
20150152516
2015-06-04

PEARLITE RAIL, FLASH BUTT WELDING METHOD FOR PEARLITE RAIL, AND METHOD OF MANUFACTURING PEARLITE RAIL

 #86
20150136864
2015-05-21

Rail

 #87
20150107727
2015-04-23

Method and system for thermal treatments of rails

 #88
20150082611
2015-03-26

RAIL RESTRAINING METHOD AND RAIL RESTRAINING DEVICE

 #89
20150069141
2015-03-12

Rail

 #90
20150041028
2015-02-12

Copper-nickel-zinc alloy containing silicon

 #91
20150027599
2015-01-29

Rail cooling method and rail cooling device

 #92
20150021836
2015-01-22

Rail heat treatment device and rail heat treatment method

 #93
20140360715
2014-12-11

Rail cooling method

 #94
20140311711
2014-10-23

Cooling tank for rails

 #95
20140246130
2014-09-04

Hypereutectoid-head steel rail

 #96
20140208780
2014-07-31

Cooling system and cooling method of rolling steel

 #97
20140182751
2014-07-03

Heat treatment method of turnout track and the turnout track

 #98
20140130943
2014-05-15

Method of making high strength steel crane rail

 #99
20140102603
2014-04-17

METHOD FOR HEAT-TREATING BAINITE STEEL RAIL

 #100
20140087320
2014-03-27

Method of reheating rail weld zone

 #101
20140060710
2014-03-06

Heat treatment method for bainitic turnout rail

 #102
20130133784
2013-05-30

Method and apparatus for treatment of a rail weld

 #103
20130065079
2013-03-14

Steel rail and method of manufacturing the same

 #104
20120318407
2012-12-20

Spring steel and surface treatment method for steel material

 #105
20120298263
2012-11-29

Hypereutectoid, head-hardened steel rail

 #106
20120241053
2012-09-27

USE OF INTERMEDIATE PIECE FOR CONNECTING MOLDED ARTICLES OF MANGANESE STEEL WITH CARBON STEEL, AND METHOD FOR CONNECTING AUSTENITIC MANGANESE STEEL CASTING PIECES WITH STANDARD RAILS

 #107
20120168043
2012-07-05

System and method for hardening rails

 #108
20120098171
2012-04-26

Cooling tank for rails

 #109
20120087825
2012-04-12

Pearlite-based high carbon steel rail having excellent ductility and process for production thereof

 #110
20120076685
2012-03-29

High-strength pearlitic steel rail having excellent delayed fracture properties

 #111
20120015212
2012-01-19

Method of cooling rail weld zone, and rail weld joint

 #112
20120012296
2012-01-19

Device and method for cooling rail weld zone

 #113
20110303756
2011-12-15

Pearlitic rail with excellent wear resistance and toughness

 #114
20110253268
2011-10-20

High carbon content and high strength heat-treated steel rail and method for producing the same

 #115
20110226389
2011-09-22

Pearlite rail

 #116
20110139320
2011-06-16

Method of making a hypereutectoid, head-hardened steel rail

 #117
20110038749
2011-02-17

Rail steel with an excellent combination of wear properties and rolling contact fatigue resistance

 #118
20100330387
2010-12-30

High strength thick steel material and high strength giant H-shape excellent in toughness and weldability and methods of production of same

 #119
20100307646
2010-12-09

Cooling system and cooling method of rolling steel

 #120
20100300586
2010-12-02

Process of thermal treatment of rails

 #121
20100276955
2010-11-04

TREATMENT OF RAILWAY WHEELS

 #122
20100224288
2010-09-09

INTERMEDIATE PIECE FOR CONNECTING MOLDED ARTICLES OF MANGANESE STEEL WITH CARBON STEEL AND METHOD FOR CONNECTING AUSTENITIC MANGANESE STEEL CASTING PIECES WITH STANDARD RAILS

 #123
20100207305
2010-08-19

System for cooling shape-rolled rails

 #124
20100186857
2010-07-29

INTERNAL HIGH HARDNESS TYPE PEARLITIC RAIL WITH EXCELLENT WEAR RESISTANCE, ROLLING CONTACT FATIGUE RESISTANCE, AND DELAYED FRACTURE PROPERTY AND METHOD FOR PRODUCING SAME

 #125
20100116381
2010-05-13

Internal high hardness type pearlitic rail with excellent wear resistance and rolling contact fatigue resistance and method for producing same

 #126
20090314049
2009-12-24

Method for producing pearlitic rail excellent in wear resistance and ductility

 #127
20090274572
2009-11-05

High-strength pearlitic steel rail having excellent delayed fracture properties

 #128
20090200713
2009-08-13

System and method for hardening rails

 #129
20090065501
2009-03-12

Electric induction heating of a rail head with non-uniform longitudinal temperature distribution

 #130
20090014099
2009-01-15

Rail manufacturing method

 #131
20080060726
2008-03-13

METHOD AND APPARATUS FOR HEAT TREATMENT OF STEEL RAIL

 #132
20080018027
2008-01-24

System for cooling shape-rolled rails

 #133
20080011393
2008-01-17

Pearlitic steel rail excellent in wear resistance and ductility and method for producing same

 #134
20070181231
2007-08-09

Method for producing high-carbon steel rails excellent in wear resistance and ductility

 #135
20070007251
2007-01-11

Method of repairing a rail

 #136
20060016858
2006-01-26

Method of improving quality and reliability of welded rail joint properties by ultrasonic impact treatment