F16K 31/406
Acting on a piston
Official title: {acting on a piston}
F16K31/406 (Acting on a piston) appears on 339 US grants and 324 published applications in this corpus.
Search patents in F16K- Granted patents
- 339
- Published applications
- 324
- Assignees
- 220
- Inventors
- 704
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 6 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 5 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 6 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 12 | 0 |
| 2002 | 1 | 2 |
| 2003 | 4 | 10 |
| 2004 | 3 | 14 |
| 2005 | 11 | 4 |
| 2006 | 8 | 8 |
| 2007 | 2 | 10 |
| 2008 | 5 | 8 |
| 2009 | 2 | 4 |
| 2010 | 4 | 9 |
| 2011 | 4 | 10 |
| 2012 | 5 | 13 |
| 2013 | 8 | 18 |
| 2014 | 7 | 8 |
| 2015 | 12 | 17 |
| 2016 | 12 | 19 |
| 2017 | 14 | 13 |
| 2018 | 12 | 17 |
| 2019 | 13 | 15 |
| 2020 | 23 | 22 |
| 2021 | 12 | 10 |
| 2022 | 11 | 27 |
| 2023 | 16 | 13 |
| 2024 | 17 | 28 |
| 2025 | 20 | 14 |
| 2026 | 13 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods for valve actuation21 Jul 2026US 12,687,238 B2Fisher Controls International LLC
- Shut-off valve, and hydrogen tank system comprising shut-off valve21 Jul 2026US 12,687,261 B2Robert Bosch GmbH
- Electro-hydraulic actuator with a pilot-actuated float mode16 Jun 2026US 12,655,918 B2Parker-Hannifin Corporation
- Shut-off valve and control method for controlling a hydrogen flow from a pressurized tank2 Jun 2026US 12,644,536 B2Robert Bosch GmbH
- Safety device for a linearly actuated process valve26 May 2026US 12,638,097 B2Robert Bosch GmbH
- Solenoid pilot valves for cryogenic fluid8 Oct 2026US 2026/0309252 A1Engineered Controls International, LLC
- Valve for continuous hydraulic damping force regulation30 Jul 2026US 2026/0218770 A1Astemo, Ltd.
- Pressure control valve for the open-loop or closed-loop control of a pressure of a fluid in a pilot pressure chamber, and vibration damper having such a pressure control valve23 Jul 2026US 2026/0210453 A1Solero Technologies Villingen GMBH
- Cryogenic fluid shut-off valve9 Jul 2026US 2026/0194145 A1Engineered Controls International, LLC
- Fuel cut-off valve18 Jun 2026US 2026/0168587 A1Unick Corporation
Most cited
By later US patents
- Fluid control valve129US 4,305,566 AFluid Controls, Inc. · 1981
- Cartridge valve having solenoid bypass and integral relief valve94US 5,992,450 AEaton Corporation · 1999
- Hydraulic system with cross function regeneration90US 6,502,393 B1HUSCO International, Inc. · 2003
- Water flow control system83US 5,341,839 AToto Ltd. · 1994
- Multi-operation discharge control device78US 6,019,343 A2000