C21D 9/10
Shotgun barrels
Official title: shotgun barrels
C21D9/10 (Shotgun barrels) appears on 16 US grants and 14 published applications in this corpus.
Search patents in C21D- Granted patents
- 16
- Published applications
- 14
- Assignees
- 18
- Inventors
- 37
- Latest grant
- 4 Jun 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 2 |
| 2012 | 0 | 0 |
| 2013 | 2 | 0 |
| 2014 | 1 | 2 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 2 | 0 |
| 2021 | 0 | 2 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
| 2024 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- High pressure instantaneously uniform quench to control part properties4 Jun 2024US 12,000,007 B2Integrated Heat Treating Solutions, LLC
- Method for producing a highly heat-resistant weapon barrel provided with a twist profile14 Nov 2023US 11,814,694 B2Rheinmetall Waffe Munition GmbH
- Cartridge case induction annealing apparatus29 Dec 2020US 10,876,191 B2AMP Annealing Limited
- Steel for small-caliber weapon28 Jul 2020US 10,724,124 B2Aubert & Duval
- Cartridge case induction annealing apparatus25 Apr 2017US 9,631,251 B2AMP Annealing Limited
- High Strength, High Impact Toughness Steel Alloy, an Article of Manufacture Made Therefrom, and a Method of Making the Same5 Dec 2024US 2024/0401176 A1CRS Holdings, Inc.
- High Strength, High Impact Toughness Steel Alloy, an Article of Manufacture Made Therefrom, and a Method for Making the Same2 Jun 2022US 2022/0170141 A1
- Method for producing a highly heat-resistant weapon barrel provided with a twist profile8 Jul 2021US 2021/0207233 A1Rheinmetall Waffe Munition GmbH
- High pressure instantaneously uniform quench to control part properties25 Mar 2021US 2021/0087644 A1Integrated Heat Treating Solutions, LLC
- Steel for small-calibre weapon24 May 2018US 2018/0142332 A1Aubert & Duval
Most cited
By later US patents
- Method for gun barrel manufacture using tailored autofrettage mandrels21US 6,810,615 B2United Defense, L.P. · 2004
- Deep cryogenic tempering process based on flashing liquid nitrogen through a dispersal system16US 5,865,913 A300 Below, Inc. · 1999
- Blank for gun barrel, method for producing said gun barrel and gun barrel12US 6,564,689 B1Damasteel Aktiebolag · 2003
- Autofrettage device for tubes11US 5,177,990 ARheinmetall GmbH · 1993
- Method for nitriding and nitrocarburizing rifle barrels in a fluidized bed furnace9US 5,039,357 ADynamic Metal Treating, Inc. · 1991