ClassID:

119102

C21D9/52 - page 2 - 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

Recent Application in this class:
#301
20120291928
2012-11-22

Process for the heat treatment of metal strip material

#302
20120288733
2012-11-15

High strength hot dip galvanised steel strip

#303
20120247618
2012-10-04

HIGH STRENGTH STEEL MATERIAL AND HIGH STRENGTH BOLT EXCELLENT IN DELAYED FRACTURE RESISTANCE AND METHODS OF PRODUCTION OF SAME

#304
20120235331
2012-09-20

Method and apparatus for removing coolant liquid from moving metal strip

#305
20120222777
2012-09-06

PROCESS TO MANUFACTURE GRAIN-ORIENTED ELECTRICAL STEEL STRIP AND GRAIN-ORIENTED ELECTRICAL STEEL PRODUCED THEREBY

#306
20120187108
2012-07-26

ASSEMBLY, DEVICE AND METHOD FOR ATTACHING A CONTACT TUBE TO A SHAFT OF A CONTINUOUS RESISTANCE ANNEALER FOR WIRES

#307
20120125489
2012-05-24

High strength steel wire for spring

#308
20120123329
2012-05-17

Medical guide wire, an assembly of microcatheter and guiding catheter combined with the medical guide wire, and an assembly of ballooncatheter and guiding catheter combined with the medical guide wire

#309
20120060980
2012-03-15

MARTENSITIC WIRE WITH THIN POLYMER COATING

#310
20120040206
2012-02-16

Device and method for the production of a metallic strip

#311
20120014831
2012-01-19

Wire rod, steel wire, and manufacturing method thereof

#312
20110284526
2011-11-24

CLAMPING APPARATUS AND METHOD OF HEAT-TREATING A LONG MATERIAL

#313
20110272066
2011-11-10

Manufacturing method of steel sheet for cans

#314
20110253269
2011-10-20

ANTIBACTERIAL STAINLESS STEEL WIRE AND MANUFACTURING METHOD THEREOF

#315
20110240179
2011-10-06

Method for Producing a Component Having Improved Elongation at Break Properties

#316
20110223441
2011-09-15

VERY HIGH MECHANICAL STRENGTH STEEL AND METHOD FOR PRODUCING A SHEET OF THIS STEEL COATED WITH ZINC OR ZINC ALLOY

#317
20110162750
2011-07-07

Flexible pipe for conveying hydrocarbons having a high corrosion resistance, and method for making same

#318
20110114231
2011-05-19

Steel filament patented in bismuth

#319
20110100347
2011-05-05

Wire and methodology for cutting materials with wire

#320
20110094700
2011-04-28

Process for continuous production of ductile microwires from glass forming systems

#321
20110066106
2011-03-17

Medical guide wire, a method of making the same, an assembly of balloon catheter and guiding catheter combined with the medical guide wire, an assembly of microcatheter and guiding catheter combined with the medical guide wire

#322
20110048585
2011-03-03

Heat treated galvannealed steel material and a method for its manufacture

#323
20110018178
2011-01-27

Method and device for blowing gas on a running strip

#324
20110017368
2011-01-27

Steel Material, Process of Fabricating Steel Material, and Apparatus of Fabricating Steel Material

#325
20100307644
2010-12-09

PROCESS FOR MANUFACTURING COLD-ROLLED AND ANNEALED STEEL SHEET WITH A VERY HIGH STRENGTH, AND SHEET THUS PRODUCED

#326
20100236667
2010-09-23

Method for production of steel product with outstanding descalability; and steel wire with outstanding descalability

#327
20100230010
2010-09-16

Thin strip of amorphous alloy, nanocrystal soft magnetic alloy, and magnetic core

#328
20100224287
2010-09-09

High-strength spring steel excellent in brittle fracture resistance and method for producing same

#329
20100212786
2010-08-26

High-strength steel wire excellent in ductility and method of manufacturing the same

#330
20100192658
2010-08-05

Method for cooling hot strip

#331
20100178527
2010-07-15

Method for hot dip galvanizing of AHSS or UHSS strip material, and such material

#332
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

#333
20100132854
2010-06-03

Microtreatment of iron-based alloy, apparatus and method therefor, and articles resulting therefrom

#334
20100065167
2010-03-18

Annealing and pickling process

#335
20100034691
2010-02-11

Spring steel wire excellent in fatigue characteristic and wire drawability

#336
20100000636
2010-01-07

DUPLEX STAINLESS STEEL

#337
20090314394
2009-12-24

Method for manufacturing an austenitic steel object

#338
20090301157
2009-12-10

Method of and apparatus for hot rolling a thin silicon-steel workpiece into sheet steel

#339
20090293998
2009-12-03

Oil-Tempered Wire and Method of Producing the Same

#340
20090283181
2009-11-19

Spring produced by a process comprising coiling a hard drawn steel wire excellent in fatigue strength and resistance to setting

#341
20090277558
2009-11-12

Lightweight and excellent ductile bead wire, method for producing the same and lightweight tire

#342
20090269578
2009-10-29

Steel wire rod

#343
20090229710
2009-09-17

Method for production of steel product with outstanding descalability; and steel wire with outstanding descalability

#344
20090205755
2009-08-20

Facility for production of high strength steel sheet or hot dip zinc coated high strength steel sheet excellent in elongation and hole expandability

#345
20090202382
2009-08-13

High manganese steel strips with excellent coatability and superior surface property, coated steel strips using steel strips and method for manufacturing the steel strips

#346
20090092516
2009-04-09

High strength spring-use heat treated steel

#347
20090020196
2009-01-22

Cold rolled steel sheet having aging resistance and superior formability, and process for producing the same

#348
20080264529
2008-10-30

Apparatus and Method for Continuously Processing Long Bar by Heat Treatment Using Induction Heating

#349
20080169050
2008-07-17

METHOD FOR MANUFACTURING PRIME HOT ROLLED HIGH TENSILE STRENGTH DEFORMED BARS

#350
20070261770
2007-11-15

Method and apparatus for micro-treating iron-based alloy, and the material resulting therefrom

#351
20070256767
2007-11-08

Steel Wire for Cold Forging Having Excellent Low Temperature Impact Properties and Method of Producing the Same

#352
20070181230
2007-08-09

Method for producing mat-surfaced austenitic stainless steel strips

#353
20070163680
2007-07-19

Spring steel excellent in sag resistance and fatigue property

#354
20070095439
2007-05-03

Spring steel with excellent resistance to hydrogen embrittlement and steel wire and spring obtained from the steel

#355
20070041863
2007-02-22

Precipitation hardenable austenitic steel

#356
20070006947
2007-01-11

Steel wire for cold forging having excellent low temperature impact properties and method of producing the same

#357
20060196584
2006-09-07

Steels for high-strength springs excellent in cold workability and quality stability

#358
20060157166
2006-07-20

Process for manufacturing bake hardening steel sheet, and steel sheet and parts thus obtained

#359
20060115372
2006-06-01

Refractory metal annealing bands

#360
20060102256
2006-05-18

Very high mechanical strength steel and method for making a sheet thereof coated with zinc or zinc alloy

#361
20060086429
2006-04-27

Cold-rolled steel strip with silicon content of at least 3.2 wt % and used for electromagnetic purposes

#362
20050173028
2005-08-11

Steel wire for hard drawn spring excellent in fatigue strength and resistance to settling, and hard drawn spring and method of making thereof

#363
20050161134
2005-07-28

High strength and low yield ratio cold rolled steel sheet and method of manufacturing the same

#364
20050132867
2005-06-23

Steel wire and manufacturing method therefor

#365
20050126661
2005-06-16

Precipitation hardenable austenitic steel

#366
20050081966
2005-04-21

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