F41A 21/18
Grooves-rifling
Official title: Grooves-Rifling
F41A21/18 (Grooves-rifling) appears on 97 US grants and 95 published applications in this corpus.
Search patents in F41A- Granted patents
- 97
- Published applications
- 95
- Assignees
- 54
- Inventors
- 165
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 2 |
| 2002 | 2 | 1 |
| 2003 | 0 | 3 |
| 2004 | 2 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 2 |
| 2007 | 1 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
| 2010 | 2 | 2 |
| 2011 | 1 | 3 |
| 2012 | 1 | 4 |
| 2013 | 0 | 1 |
| 2014 | 5 | 5 |
| 2015 | 5 | 4 |
| 2016 | 4 | 5 |
| 2017 | 3 | 1 |
| 2018 | 3 | 6 |
| 2019 | 2 | 11 |
| 2020 | 6 | 7 |
| 2021 | 8 | 6 |
| 2022 | 7 | 4 |
| 2023 | 5 | 5 |
| 2024 | 6 | 8 |
| 2025 | 4 | 9 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cartridge with inner surface grooves for a conducted electrical weapon21 Apr 2026US 12,607,437 B2Axon Enterprise, Inc.
- Reverse-saboted sidearm systems, and related sidearms, ammunition, and methods3 Feb 2026US 12,540,805 B2
- Firearm barrel27 Jan 2026US 12,535,307 B2Franklin Armory Holdings, Inc.
- Net-launching system6 Jan 2026US 12,516,914 B2Gibson Robotics Ltd
- Reducing blow-by in firearms4 Nov 2025US 12,460,886 B2
- 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
- Handheld gas propelled missile launcher34US 7,412,975 B22008
- Muzzle venting in muzzleloading rifles32US 5,844,162 A1998
- Firearm barrels and projectiles30US 4,176,487 A1979
- Dual purpose gun barrel for spin stabilized or fin stabilized projectiles and gun launched rockets25US 4,712,465 AThe Boeing Company · 1987