C21D9/10 - CPC Classification Index

ClassID:

119080 ⎘

C21D9/10 - CPC Classification

Classification description:

Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes shotgun barrels

Recent Application in this class:

20240401176

2024-12-05

High Strength, High Impact Toughness Steel Alloy, an Article of Manufacture Made Therefrom, and a Method of Making the Same

20220170141

2022-06-02

High Strength, High Impact Toughness Steel Alloy, an Article of Manufacture Made Therefrom, and a Method for Making the Same

20210087644

2021-03-25

High pressure instantaneously uniform quench to control part properties

20180142332

2018-05-24

Steel for small-caliber weapon

20170198378

2017-07-13

Cartridge case induction annealing apparatus

20140331733

2014-11-13

Torsional extreme-plastic processing method of conic metal pipe

20140144903

2014-05-29

Cartridge case induction annealing apparatus

20110253270

2011-10-20

Gun barrel of firearms

20110017051

2011-01-27

Compressed elastomer process for autofrettage and lining tubes

#10

20090084255

2009-04-02

Compressed elastomer process for autofrettage and lining tubes

#11

20080110535

2008-05-15

High tensile strength steel material having excellent delayed fracture resistance property, and method of manufacturing the same

#12

20050066801

2005-03-31

Method for gun barrel manufacture using tailored autofrettage mandrels