F16K 31/143
The fluid acting on a piston
Official title: the fluid acting on a piston
F16K31/143 (The fluid acting on a piston) appears on 93 US grants and 70 published applications in this corpus.
Search patents in F16K- Granted patents
- 93
- Published applications
- 70
- Assignees
- 74
- Inventors
- 180
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 3 |
| 2006 | 3 | 6 |
| 2007 | 2 | 2 |
| 2008 | 3 | 0 |
| 2009 | 2 | 0 |
| 2010 | 0 | 3 |
| 2011 | 0 | 0 |
| 2012 | 4 | 2 |
| 2013 | 0 | 3 |
| 2014 | 2 | 5 |
| 2015 | 3 | 1 |
| 2016 | 4 | 4 |
| 2017 | 2 | 3 |
| 2018 | 3 | 6 |
| 2019 | 8 | 9 |
| 2020 | 6 | 5 |
| 2021 | 6 | 4 |
| 2022 | 5 | 1 |
| 2023 | 0 | 3 |
| 2024 | 1 | 6 |
| 2025 | 1 | 1 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Safety valve for a pneumatically actuatable tool16 Jun 2026US 12,654,288 B2Oetiker Schweiz AG
- Valve5 May 2026US 12,618,482 B2Fujikin Incorporated
- Hydraulic valve with manual override6 Jan 2026US 12,516,741 B2
- Emergency isolation valve control design4 Feb 2025US 12,215,722 B2Saudi Arabian Oil Company
- Faucet7 May 2026US 2026/0126128 A1Shanghai Aquacubic Sanitaryware Co., Ltd
- Valve for a refrigeration application27 Feb 2025US 2025/0067364 A1
- Emergency isolation valve control design3 Oct 2024US 2024/0328536 A1Saudi Arabian Oil Company
- Safety valve26 Sep 2024US 2024/0318741 A1Ham-Let [Israel-Canada] Ltd.
- Valve11 Jul 2024US 2024/0229940 A1Fujikin Incorporated
Most cited
By later US patents
- Manual override for hydraulic gate valve actuators66US 4,213,480 AACF Industries, Incorporated · 1980
- Balanced pilot operated check valve61US 8,262,058 B22012
- Remote-control apparatus for opening or closing the valve of containers or the like43US 4,629,157 AJapan Oxygen Co., Ltd. · 1986
- Pneumatic gas cylinder valve actuator27US 4,637,423 A1987
- Tap for a cylinder of gas under pressure27US 4,815,692 A1989