F16K 31/1226
The fluid circulating through the piston
Official title: {the fluid circulating through the piston}
F16K31/1226 (The fluid circulating through the piston) appears on 128 US grants and 154 published applications in this corpus.
Search patents in F16K- Granted patents
- 128
- Published applications
- 154
- Assignees
- 100
- Inventors
- 315
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 4 |
| 2005 | 0 | 5 |
| 2006 | 4 | 6 |
| 2007 | 0 | 4 |
| 2008 | 1 | 1 |
| 2009 | 5 | 3 |
| 2010 | 0 | 9 |
| 2011 | 1 | 4 |
| 2012 | 2 | 2 |
| 2013 | 7 | 7 |
| 2014 | 6 | 4 |
| 2015 | 6 | 4 |
| 2016 | 4 | 10 |
| 2017 | 4 | 8 |
| 2018 | 7 | 10 |
| 2019 | 7 | 7 |
| 2020 | 10 | 13 |
| 2021 | 11 | 14 |
| 2022 | 11 | 13 |
| 2023 | 6 | 8 |
| 2024 | 12 | 4 |
| 2025 | 11 | 8 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Relay valve for a compressed air system for a vehicle23 Jun 2026US 12,663,027 B2Knorr-Bremse Systeme fur Nutzfahrzeuge GmbH
- Valves for controlling flow of pressurized fluid to a tool5 May 2026US 12,618,485 B2Enerpac Tool Group Corp.
- Pipeline actuation system31 Mar 2026US 12,590,594 B2
- Valve control apparatus, valve control system, valve control method, and valve control program30 Dec 2025US 12,510,179 B2Fujikin Incorporated
- Two-way angle valve capable of buffering deflation2 Dec 2025US 12,486,918 B2King Lai Hygienic Materials Co., Ltd
- Fluid control valve30 Jul 2026US 2026/0218797 A1Ckd Corporation
- Pressure-relieving valve16 Jul 2026US 2026/0201970 A1
- Fluid-controlled valve25 Jun 2026US 2026/0177164 A1Kitz Sct Corporation
- Compliant piston pneumatic valve actuator2 Apr 2026US 2026/0092650 A1ASM IP Holding B. V.
- Two-way angle valve capable of buffering deflation11 Sep 2025US 2025/0283546 A1King Lai Hygienic Materials Co., Ltd
Most cited
By later US patents
- Apparatus for delivering process gas for making semiconductors and method of using same53US 5,762,086 AVeriflo Corporation · 1998
- Shuttle valve40US 7,637,279 B2Smiths Medical ASD, Inc. · 2009
- High-temperature gas control valve29US 6,508,453 B2CDK Corporation · 2003
- Control valve26US 4,137,933 ATRW Inc. · 1979
- Fluid control system and valve to be used therein19US 5,850,853 AFujikin Incorporated · 1998