F16K 31/163
The fluid acting on a piston
Official title: the fluid acting on a piston
F16K31/163 (The fluid acting on a piston) appears on 317 US grants and 239 published applications in this corpus.
Search patents in F16K- Granted patents
- 317
- Published applications
- 239
- Assignees
- 205
- Inventors
- 585
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 6 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 6 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 6 | 0 |
| 1986 | 5 | 0 |
| 1987 | 7 | 0 |
| 1988 | 2 | 0 |
| 1989 | 9 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 6 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 9 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 7 | 0 |
| 2000 | 11 | 0 |
| 2001 | 8 | 0 |
| 2002 | 1 | 1 |
| 2003 | 5 | 6 |
| 2004 | 5 | 8 |
| 2005 | 4 | 10 |
| 2006 | 8 | 4 |
| 2007 | 4 | 4 |
| 2008 | 3 | 5 |
| 2009 | 3 | 2 |
| 2010 | 5 | 7 |
| 2011 | 3 | 6 |
| 2012 | 4 | 6 |
| 2013 | 5 | 6 |
| 2014 | 3 | 7 |
| 2015 | 6 | 12 |
| 2016 | 8 | 21 |
| 2017 | 8 | 19 |
| 2018 | 17 | 19 |
| 2019 | 17 | 15 |
| 2020 | 19 | 19 |
| 2021 | 15 | 7 |
| 2022 | 10 | 16 |
| 2023 | 11 | 18 |
| 2024 | 12 | 14 |
| 2025 | 18 | 5 |
| 2026 | 6 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Valve control device18 Aug 2026US 12,710,110 B2Alfa Laval Corporate AB
- Diagnostic method, diagnostic device and process valve assembly11 Aug 2026US 12,704,198 B2Festo AG & Co.
- Connecting rod drive mechanism for water discharge valve and water discharge valve having said mechanism14 Apr 2026US 12,601,421 B2Xiamen R&T Plumbing Technology Co., Ltd.
- Flow-rate control valve actuator10 Mar 2026US 12,571,485 B2Koganei Corporation
- Valve with capability to self-anticipate failure3 Mar 2026US 12,565,940 B2Kuqi Investment Co., Ltd.
- Gate valve with speed controller using cda4 Jun 2026US 2026/0153164 A1ASM IP Holding B. V.
- Torque limiter coupling assembly for valve actuators15 Jan 2026US 2026/0016102 A1Watts Regulator Co.
- Valve Actuator Device for Fluid Flow Control20 Nov 2025US 2025/0354622 A1Batfer Investment S.A.
- Rotary actuated shear and seal valve2 Oct 2025US 2025/0305385 A1Nxl Technologies Inc.
- Flow-rate control valve3 Jul 2025US 2025/0215998 A1Koganei Corporation
Most cited
By later US patents
- Rotatable ball valve apparatus and method98US 4,681,133 AHydril Company · 1987
- Rotatable ball valve apparatus and method82US 4,703,807 AHydril Company · 1987
- Valve actuator66US 3,982,725 AKeystone International, Inc. · 1976
- Valve operators64US 4,869,459 A1989
- Remote-control apparatus for opening or closing the valve of containers or the like43US 4,629,157 AJapan Oxygen Co., Ltd. · 1986