ClassID:

118997

C21D8/005 - page 3 - CPC Classification

Classification description:

Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys

Recent Application in this class:
#601
20100243110
2010-09-30

Weldable steel of high strength and high toughness, and method of producing members using the same

#602
20100193088
2010-08-05

High corrosion resistance precipitation hardened martensitic stainless steel

#603
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

#604
20100150772
2010-06-17

HOT-FORMING STEEL ALLOY

#605
20100124515
2010-05-20

Machine structural steel excellent in machinability and strength properties

#606
20100108201
2010-05-06

High-strength hot rolled steel sheet being free from peeling and excellent in surface properties and burring properties, and method for manufacturing the same

#607
20100059150
2010-03-11

High toughness abrasion resistant steel with little change in hardness during use and method of production of same

#608
20100026048
2010-02-04

Method of thermomechanical shaping a final product with very high strength and a product produced thereby

#609
20100021339
2010-01-28

Components made of steels with an ultrahigh carbon content and with a reduced density and high scaling resistance

#610
20090324441
2009-12-31

AUSTENITIC STAINLESS CAST STEEL PART, METHOD FOR PRODUCTION AND USE THEREOF

#611
20090311125
2009-12-17

Hot-working steel excellent in machinability and impact value

#612
20090274573
2009-11-05

Machine Structural Steel Excellent in Machinability and Strength Properties

#613
20090123322
2009-05-14

High-Speed Steel for Saw Blades

#614
20090107587
2009-04-30

Tool steels and manufacturing method thereof

#615
20090035602
2009-02-05

High-strength steel with excellent unsusceptibility to hydrogen embrittlement

#616
20080092996
2008-04-24

Method for producing high-strength forged parts having high reduction of area

#617
20080011393
2008-01-17

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

#618
20070227634
2007-10-04

Forged or Stamped Average or Small Size Mechanical Part

#619
20070209738
2007-09-13

High strength and high toughness alloy with low density and the method of making

#620
20070137050
2007-06-21

Razor blades and compositions and processes for the production of razor blades

#621
20070125454
2007-06-07

High-strength duplex/triplex steel for lightweight construction and use thereof

#622
20070029013
2007-02-08

Iron-cobalt alloy, in particular for the moving core of electromagnetic actuators

#623
20060283530
2006-12-21

Hot-shaping and hardening a workpiece

#624
20060191613
2006-08-31

Warm rolling method

#625
20060137781
2006-06-29

High-strength four-phase steel alloys

#626
20060128496
2006-06-15

Maraging steel golf club head

#627
20060054255
2006-03-16

Controlled warm-rolling method

#628
20060054253
2006-03-16

Ferritic heat-resistant steel and method for producing it

#629
20050274436
2005-12-15

Martensitic stainless steel

#630
20050236077
2005-10-27

Method of thermo-mechanical-treatment for fe-mn-si shape-memory alloy doped with nbc

#631
20050189043
2005-09-01

Method of fabricating spheroidal graphite cast iron parts of high precision, geometrically and dimensionally, and having improved mechanical characteristics

#632
20050126248
2005-06-16

Apparatus and method for thermomechanically forming an aluminide part of a workpiece

#633
19011515
2026-03-17

Steel sheet and high strength press hardened steel part having excellent bending and method of manufacturing the same

#634
18811133
2025-05-27

Steel sheet and high strength press hardened steel part having excellent bending and method of manufacturing the same

#635
18077502
2023-09-19

Surface treatment for a wellbore drill bit

#636
16379027
2023-10-24

Tools and related methods for cold-working fluid ends

#637
16365464
2022-05-03

Method for making a continuously cast slab and the resulting mold plate

#638
13868139
2015-11-10

Creep resistant high temperature martensitic steel