F16K 31/1225
With a plurality of pistons
Official title: {with a plurality of pistons}
F16K31/1225 (With a plurality of pistons) appears on 307 US grants and 308 published applications in this corpus.
Search patents in F16K- Granted patents
- 307
- Published applications
- 308
- Assignees
- 188
- Inventors
- 515
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 6 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 7 | 7 |
| 2002 | 8 | 8 |
| 2003 | 8 | 6 |
| 2004 | 7 | 10 |
| 2005 | 4 | 9 |
| 2006 | 9 | 6 |
| 2007 | 4 | 2 |
| 2008 | 3 | 4 |
| 2009 | 1 | 4 |
| 2010 | 3 | 6 |
| 2011 | 1 | 6 |
| 2012 | 6 | 6 |
| 2013 | 2 | 15 |
| 2014 | 7 | 15 |
| 2015 | 12 | 19 |
| 2016 | 21 | 15 |
| 2017 | 16 | 22 |
| 2018 | 18 | 19 |
| 2019 | 18 | 17 |
| 2020 | 19 | 26 |
| 2021 | 20 | 20 |
| 2022 | 21 | 11 |
| 2023 | 14 | 20 |
| 2024 | 18 | 15 |
| 2025 | 12 | 12 |
| 2026 | 6 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Actuator, open/close valve mechanism, and fluid control device23 Jun 2026US 12,663,096 B2Fujikin Incorporated
- Safety valve for a pneumatically actuatable tool16 Jun 2026US 12,654,288 B2Oetiker Schweiz AG
- Rate matching hydraulic actuators on common control manifold2 Jun 2026US 12,644,534 B2Hamilton Sundstrand Corporation
- Actuator with shape memory alloy elements for operating a valve19 May 2026US 12,631,263 B2Indian Institute of Technology Kanpur
- Valves for controlling flow of pressurized fluid to a tool5 May 2026US 12,618,485 B2Enerpac Tool Group Corp.
- Pneumatic gas inlet valve with adjustable stop23 Jul 2026US 2026/0210442 A1VAT Holding AG
- Fluid-controlled valve25 Jun 2026US 2026/0177164 A1Kitz Sct Corporation
- Vibration-based health monitoring system for valves of a gas delivery system14 May 2026US 2026/0132867 A1Lam Research Corporation
- Hydraulic or pneumatic actuator for trip valves of steam turbines or turbo-expanders7 May 2026US 2026/0126127 A1Nuovo Pignone Tecnologie Srl
- Valve apparatus operated with a high pressure motive fluid and method of operating the same26 Mar 2026US 2026/0085765 A1
Most cited
By later US patents
- Bellows driver slot valve587US 5,975,492 A1999
- Expanding gate valve with pneumatic actuator73US 4,585,207 AJoy Manufacturing Company · 1986
- Dual stage valve actuator68US 4,934,652 AOtis Engineering Corporation · 1990
- Apparatus for delivering process gas for making semiconductors and method of using same53US 5,762,086 AVeriflo Corporation · 1998
- Vacuum-pressure-control slow exhaust valve52US 5,848,608 ASMC Corporation · 1998