ClassID:

162748

F41A21/22 - CPC Classification

Classification description:

Barrels; Gun tubes; Muzzle attachments; Barrel mounting means Barrels which have undergone surface treatment, e.g. phosphating

Recent Application in this class:
#1
20260139918
2026-05-21

Solving the Problems of the Prior Art Need to Oversize Weapon Bores and Loss of Accuracy Thereof

#2
20260126255
2026-05-07

WEAPONS AND WEAPON COMPONENTS INCLUDING SURFACE COATINGS

#3
20250230998
2025-07-17

EXTENDED LIFE COMPOSITE MATRIX-WRAPPED LIGHTWEIGHT FIREARM BARREL

#4
20230074469
2023-03-09

EXTENDED LIFE COMPOSITE MATRIX-WRAPPED LIGHTWEIGHT FIREARM BARREL

#5
20220049918
2022-02-17

Structured firearm barrel

#6
20210363067
2021-11-25

Low temperature carbon/bn/aluminum oxide coating

#7
20200300566
2020-09-24

Firearm barrel having improved stiffening and/or cooling

#8
20190314879
2019-10-17

Systems and methods for electroprocessing a gun barrel using a moving electrode

#9
20190249941
2019-08-15

Process for applying graphene layer to metallic firearm elements

#10
20190154379
2019-05-23

Firearm barrel stiffening and/or cooling systems and methods

#11
20190145726
2019-05-16

GUN BARREL LINER, AND ADDITIVE METHOD OF MAKING

#12
20170010063
2017-01-12

Bore healing mechanism

#13
20160363406
2016-12-15

Integrated Barrel Assembly for Firearm

#14
20140033591
2014-02-06

Device for producing a gun barrel and a gun barrel

#15
20130239791
2013-09-19

Apparatus having friction preventing function and method of manufacturing the same

#16
20130209682
2013-08-15

Durable ceramic nanocomposite thermal barrier coatings for metals and refractories

#17
20120131836
2012-05-31

ENHANCED LIFE BARREL

#18
20120110885
2012-05-10

Method for producing a gun barrel, device for producing a gun barrel and a gun barrel

#19
20110114495
2011-05-19

Low cost, environmentally favorable, chromium plate replacement coating for improved wear performance

#20
20100132241
2010-06-03

Method for accurizing a firearm

#21
20090114726
2009-05-07

METHOD AND DEVICE FOR PROTECTION AND CONTROL OF ORIGINALITY OF PRODUCTS AND THEIR COMPONENTS AND ELECTRONICALLY READABLE CERTIFICATE THEREOF

#22
20090017217
2009-01-15

Apparatus and method for applying coatings onto the interior surfaces of components and related structures produced therefrom

#23
20080063897
2008-03-13

Nodular nickel boron coating

#24
20070172695
2007-07-26

Low cost, environmentally favorable, chromium plate replacement coating for improved wear performance

#25
20070010414
2007-01-11

Composition and method for cleaning firearms

#26
20050066568
2005-03-31

Method for removing coating damages and/or erosion damages

#27
15641164
2020-04-28

Gun barrel manufacturing methods

#28
15182578
2017-07-04

Gun barrel manufacturing methods

#29
14942694
2016-06-14

Gun barrel manufacturing methods