F41A 21/16
Barrels or gun tubes characterised by the shape of the bore
F41A21/16 (Barrels or gun tubes characterised by the shape of the bore) appears on 165 US grants and 156 published applications in this corpus.
Search patents in F41A- Granted patents
- 165
- Published applications
- 156
- Assignees
- 78
- Inventors
- 264
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 4 | 2 |
| 2002 | 3 | 4 |
| 2003 | 1 | 4 |
| 2004 | 3 | 1 |
| 2005 | 2 | 3 |
| 2006 | 0 | 3 |
| 2007 | 1 | 0 |
| 2008 | 3 | 1 |
| 2009 | 0 | 1 |
| 2010 | 2 | 4 |
| 2011 | 1 | 5 |
| 2012 | 2 | 5 |
| 2013 | 2 | 3 |
| 2014 | 6 | 6 |
| 2015 | 11 | 11 |
| 2016 | 5 | 12 |
| 2017 | 8 | 5 |
| 2018 | 6 | 11 |
| 2019 | 9 | 14 |
| 2020 | 9 | 12 |
| 2021 | 12 | 9 |
| 2022 | 9 | 5 |
| 2023 | 6 | 8 |
| 2024 | 8 | 13 |
| 2025 | 7 | 11 |
| 2026 | 8 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Sectioned reducing barrel system and method of use29 Sep 2026US 12,747,924 B1
- Ram accelerator sweeper baffles18 Aug 2026US 12,710,243 B2University of Washington
- Cartridge with inner surface grooves for a conducted electrical weapon21 Apr 2026US 12,607,437 B2Axon Enterprise, Inc.
- Curve of constant width projectile system17 Mar 2026US 12,578,174 B2Bae Systems Bofors AB
- Method of blank firing3 Feb 2026US 12,540,787 B2Centre Firearms Co., Inc.
- Firearm barrel having at least one barrel gas port and method of manufacturing the same20 Aug 2026US 2026/0243532 A1WHG Properties, LLC
- Rifle barrel geometry6 Aug 2026US 2026/0227146 A1Proof Research, Inc.
- Solving the Problems of the Prior Art Need to Oversize Weapon Bores and Loss of Accuracy Thereof21 May 2026US 2026/0139918 A1
- Ammunition and weapon system18 Dec 2025US 2025/0383173 A1
- Delivery of projectiles from a rifled bore4 Dec 2025US 2025/0369737 A1Federal Cartridge Company
Most cited
By later US patents
- Jacketed bullet198US 9,389,052 B2The United States of America as represented by the Secretary of the Army · 2016
- Paintball and paintball gun39US 5,640,945 A1997
- Ballistic trajectory adjustment mechanism for toy gun36US 9,103,624 B1Vega Force International Corp. · 2015
- Paintball gun34US 5,823,173 A1998
- Handheld gas propelled missile launcher34US 7,412,975 B22008