F41A 3/90
Fluid buffers
Official title: Fluid buffers {(F41A3/62 takes precedence)}
F41A3/90 (Fluid buffers) appears on 50 US grants and 39 published applications in this corpus.
Search patents in F41A- Granted patents
- 50
- Published applications
- 39
- Assignees
- 20
- Inventors
- 76
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 2 | 1 |
| 2005 | 2 | 0 |
| 2006 | 2 | 4 |
| 2007 | 2 | 1 |
| 2008 | 1 | 1 |
| 2009 | 1 | 1 |
| 2010 | 2 | 1 |
| 2011 | 2 | 2 |
| 2012 | 1 | 2 |
| 2013 | 1 | 1 |
| 2014 | 4 | 1 |
| 2015 | 0 | 2 |
| 2016 | 2 | 2 |
| 2017 | 0 | 2 |
| 2018 | 1 | 1 |
| 2019 | 2 | 2 |
| 2020 | 1 | 1 |
| 2021 | 2 | 1 |
| 2022 | 0 | 1 |
| 2023 | 2 | 3 |
| 2024 | 1 | 4 |
| 2025 | 3 | 3 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Firearm with buffer assembly9 Jun 2026US 12,650,275 B2
- Hydraulic recoil device for handgun applications6 Jan 2026US 12,516,899 B2Kyntec Corporation
- Recessed expansion chamber in a gun slide configured for improving recoil mitigation in firearms9 Dec 2025US 12,492,878 B2Fdez Werx, LLC.
- Compact action with forward charging handle incorporated into an upper receiver handguard8 Jul 2025US 12,352,515 B222 Evolution LLC
- Hydraulic dampened high mass rotary barrel recoil system for handgun24 Jun 2025US 12,339,086 B2
- Hydraulic recoil device for handgun applications23 Apr 2026US 2026/0110507 A1Kyntec Corporation
- Breech assembly for a gun and method for checking the fluid level in the recoil damping system of such a breech assembly18 Dec 2025US 2025/0383169 A1Knds France
- Firearm with buffer assembly11 Dec 2025US 2025/0377176 A1
- Firearm piston and fire control mechanism30 Oct 2025US 2025/0334360 A1
- Recessed expansion chamber in a gun slide configured for improving recoil mitigation in firearms12 Sep 2024US 2024/0302118 A1Fdez Werx, LLC.
Most cited
By later US patents