F16K 31/363
The fluid acting on a piston
Official title: the fluid acting on a piston (F16K31/38 takes precedence)
F16K31/363 (The fluid acting on a piston) appears on 203 US grants and 147 published applications in this corpus.
Search patents in F16K- Granted patents
- 203
- Published applications
- 147
- Assignees
- 147
- Inventors
- 385
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 5 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 6 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 4 | 1 |
| 2002 | 1 | 1 |
| 2003 | 0 | 1 |
| 2004 | 4 | 6 |
| 2005 | 4 | 4 |
| 2006 | 4 | 3 |
| 2007 | 1 | 3 |
| 2008 | 3 | 1 |
| 2009 | 1 | 3 |
| 2010 | 1 | 2 |
| 2011 | 0 | 1 |
| 2012 | 4 | 3 |
| 2013 | 1 | 10 |
| 2014 | 4 | 6 |
| 2015 | 7 | 4 |
| 2016 | 8 | 8 |
| 2017 | 8 | 10 |
| 2018 | 3 | 14 |
| 2019 | 10 | 5 |
| 2020 | 9 | 11 |
| 2021 | 13 | 8 |
| 2022 | 8 | 7 |
| 2023 | 16 | 17 |
| 2024 | 11 | 11 |
| 2025 | 7 | 4 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Valve device1 Sep 2026US 12,721,468 B2De' Longhi Appliances S,R. L. Con Unico Socio
- Hydraulic valves30 Jun 2026US 12,669,188 B2Danfoss A/S
- Safety device for a linearly actuated process valve26 May 2026US 12,638,097 B2Robert Bosch GmbH
- Instant on-off valves for high pressure fluids6 Jan 2026US 12,516,745 B2
- Single pilot fluid line actuation gas lift valve and related systems and methods16 Dec 2025US 12,497,872 B2ChampionX LLC
- Damping valve and shock absorber30 Jul 2026US 2026/0218771 A1KYB Corporation
- Pilot fluid line actuation gas lift valve and related systems and methods16 Jul 2026US 2026/0201782 A1ChampionX LLC
- Pressure reduction systems and methods5 Mar 2026US 2026/0063219 A1
- Valve18 Dec 2025US 2025/0383028 A1Eagle Industry Co., Ltd.
- Safety Device for a Linearly Actuated Process Valve8 May 2025US 2025/0146596 A1Robert Bosch GmbH
Most cited
By later US patents
- Flow-control system having a wide range of flow-rate control55US 4,431,020 AMarotta Scientific Controls, Inc. · 1984
- Dump valve35US 4,771,802 APromosint & Contractors S.r.l. · 1988
- Tapered valves with conical seats34US 4,121,619 A1978
- High pressure regulator valve34US 4,620,562 AButterworth, Inc. · 1986
- Automatic-locking shut-off valve for liquid suction systems29US 6,460,564 B12002