F16K 31/12
Actuated by fluid
Official title: actuated by fluid ({fluid-actuated lift valves F16K1/126} ; fluid-actuated check valves F16K15/00; fluid-actuated safety valves F16K17/00)
F16K31/12 (Actuated by fluid) appears on 5,375 US grants and 4,594 published applications in this corpus.
Search patents in F16K- Granted patents
- 5,375
- Published applications
- 4,594
- Assignees
- 2,310
- Inventors
- 8,391
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 75 | 0 |
| 1977 | 42 | 0 |
| 1978 | 57 | 0 |
| 1979 | 47 | 0 |
| 1980 | 70 | 0 |
| 1981 | 67 | 0 |
| 1982 | 39 | 0 |
| 1983 | 35 | 0 |
| 1984 | 57 | 0 |
| 1985 | 67 | 0 |
| 1986 | 58 | 0 |
| 1987 | 60 | 0 |
| 1988 | 56 | 0 |
| 1989 | 70 | 0 |
| 1990 | 47 | 0 |
| 1991 | 48 | 0 |
| 1992 | 45 | 0 |
| 1993 | 36 | 0 |
| 1994 | 35 | 0 |
| 1995 | 49 | 0 |
| 1996 | 60 | 0 |
| 1997 | 47 | 0 |
| 1998 | 54 | 0 |
| 1999 | 99 | 0 |
| 2000 | 113 | 0 |
| 2001 | 95 | 34 |
| 2002 | 71 | 62 |
| 2003 | 81 | 102 |
| 2004 | 78 | 111 |
| 2005 | 91 | 106 |
| 2006 | 91 | 93 |
| 2007 | 52 | 89 |
| 2008 | 40 | 110 |
| 2009 | 53 | 100 |
| 2010 | 66 | 140 |
| 2011 | 64 | 112 |
| 2012 | 104 | 130 |
| 2013 | 101 | 183 |
| 2014 | 126 | 185 |
| 2015 | 163 | 233 |
| 2016 | 197 | 282 |
| 2017 | 234 | 323 |
| 2018 | 241 | 327 |
| 2019 | 335 | 333 |
| 2020 | 330 | 339 |
| 2021 | 297 | 257 |
| 2022 | 259 | 244 |
| 2023 | 214 | 225 |
| 2024 | 251 | 214 |
| 2025 | 193 | 157 |
| 2026 | 115 | 103 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F16K 31/122The fluid acting on a piston1,743
- F16K 31/36In which fluid from the circuit is constantly supplied to the fluid1,411
- F16K 31/18Actuated by a float805
- F16K 31/126The fluid acting on a diaphragm, bellows, or the like760
- F16K 31/16With a mechanism, other than pulling-or pushing-rod, between fluid motor and closure471
- F16K 31/42By means of electrically-actuated members in the supply or discharge conduits of414
- F16K 31/14For mounting on, or in combination with, hand-actuated valves161
Recent patents
- Fluid control valve with diaphragm tensioning geometry6 Oct 2026US 12,753,844 B2Equilibar, LLC
- Valve lift arm6 Oct 2026US 12,753,855 B2Apex Valves Limited
- High-pressure fluid on/off valve and components and method of use of same29 Sep 2026US 12,747,803 B2Flow International Corporation
- Safety valve29 Sep 2026US 12,747,806 B2Ham-Let [Israel-Canada] Ltd.
- Multiport gas chromatograph valve29 Sep 2026US 12,748,082 B2Rosemount Inc.
- Electric bleed off valve assembly8 Oct 2026US 2026/0309251 A1FMC Technologies, Inc.
- Solenoid pilot valves for cryogenic fluid8 Oct 2026US 2026/0309252 A1Engineered Controls International, LLC
- Refrigerator appliance with liquid drain assembly8 Oct 2026US 2026/0309399 A1Haier US Appliance Solutions, Inc.
- Apparatus for the Control of a Flow of a Liquid1 Oct 2026US 2026/0299625 A1
- Electric vehicle battery coolant drain device1 Oct 2026US 2026/0302574 A1New Flyer Industries Canada ULC
Most cited
By later US patents
- Microfabricated elastomeric valve and pump systems619US 6,408,878 B1California Institute of Technology · 2002
- Bellows driver slot valve587US 5,975,492 A1999
- Film processing system434US 6,296,711 B1CVD Systems, Inc. · 2001
- Method of making a microfabricated elastomeric valve294US 6,793,753 B2California Institute of Technology · 2004
- Valve positioner with pressure feedback, dynamic correction and diagnostics203US 5,573,032 ARosemount Inc. · 1996