F16K 31/0644
One-way valve
Official title: {One-way valve}
F16K31/0644 (One-way valve) appears on 2,006 US grants and 2,067 published applications in this corpus.
Search patents in F16K- Granted patents
- 2,006
- Published applications
- 2,067
- Assignees
- 863
- Inventors
- 3,898
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 7 | 0 |
| 1978 | 6 | 0 |
| 1979 | 4 | 0 |
| 1980 | 8 | 0 |
| 1981 | 11 | 0 |
| 1982 | 9 | 0 |
| 1983 | 7 | 0 |
| 1984 | 8 | 0 |
| 1985 | 24 | 0 |
| 1986 | 13 | 0 |
| 1987 | 18 | 0 |
| 1988 | 20 | 0 |
| 1989 | 20 | 0 |
| 1990 | 18 | 0 |
| 1991 | 17 | 0 |
| 1992 | 23 | 0 |
| 1993 | 13 | 0 |
| 1994 | 19 | 0 |
| 1995 | 23 | 0 |
| 1996 | 13 | 0 |
| 1997 | 17 | 0 |
| 1998 | 23 | 0 |
| 1999 | 27 | 0 |
| 2000 | 30 | 0 |
| 2001 | 36 | 8 |
| 2002 | 34 | 42 |
| 2003 | 34 | 45 |
| 2004 | 56 | 45 |
| 2005 | 36 | 64 |
| 2006 | 38 | 66 |
| 2007 | 32 | 44 |
| 2008 | 35 | 53 |
| 2009 | 21 | 54 |
| 2010 | 30 | 80 |
| 2011 | 27 | 52 |
| 2012 | 47 | 75 |
| 2013 | 57 | 90 |
| 2014 | 53 | 103 |
| 2015 | 98 | 113 |
| 2016 | 88 | 107 |
| 2017 | 98 | 132 |
| 2018 | 107 | 115 |
| 2019 | 109 | 126 |
| 2020 | 108 | 128 |
| 2021 | 96 | 103 |
| 2022 | 101 | 115 |
| 2023 | 88 | 85 |
| 2024 | 67 | 87 |
| 2025 | 87 | 83 |
| 2026 | 36 | 52 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Actuated elastic valves6 Oct 2026US 12,753,854 B2Sartorius Stedim Fmt SAS
- Electronic timer for mitigation of solenoid valve water hammer effect15 Sep 2026US 12,736,154 B2
- Solenoid valve8 Sep 2026US 12,729,777 B2Buerkert Werke GmbH
- Valve core with microporous structure and solenoid valve using valve core25 Aug 2026US 12,716,511 B2Suzhou Rayontech Technology Co., Ltd
- Electro-hydraulic valve for proportional control of spring apply hydraulic release (SAHR) brakes4 Aug 2026US 12,697,955 B2Zf Off-Highway Solutions Minnesota 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
- Magnetic inflation device and inflating and deflating method thereof1 Oct 2026US 2026/0298360 A1
- Interactive Beverage Dispensing System and Method1 Oct 2026US 2026/0298366 A1
- Valves for mass flow controllers24 Sep 2026US 2026/0287080 A1Illinois Tool Works Inc.
Most cited
By later US patents
- Fully-electrically driven downhole safety valve149US 10,989,019 B2China University of Petroleum (East China) · 2021
- Apparatus and method for controlling fluid flow117US 6,948,697 B2Arichell Technologies, Inc. · 2005
- Electrically controlled pressure relief valve and system and method for controlling same95US 7,299,112 B2ActiveShock, Inc. · 2007
- Leak detection arrangement for valve having sealing means84US 4,010,769 APlast-O-Matic Valves, Inc. · 1977
- Solenoid valve, especially an outlet valve for infusion water80US 4,826,132 AFirma A. U. K. Muller GmbH & Co. KG · 1989