F16K 17/18
Opening on surplus pressure on either side
Official title: opening on surplus pressure on either side
F16K17/18 (Opening on surplus pressure on either side) appears on 437 US grants and 329 published applications in this corpus.
Search patents in F16K- Granted patents
- 437
- Published applications
- 329
- Assignees
- 333
- Inventors
- 788
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 7 | 0 |
| 1978 | 9 | 0 |
| 1979 | 7 | 0 |
| 1980 | 8 | 0 |
| 1981 | 9 | 0 |
| 1982 | 5 | 0 |
| 1983 | 3 | 0 |
| 1984 | 7 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 6 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 9 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 7 | 0 |
| 1997 | 2 | 0 |
| 1998 | 9 | 0 |
| 1999 | 7 | 0 |
| 2000 | 2 | 0 |
| 2001 | 15 | 4 |
| 2002 | 8 | 6 |
| 2003 | 5 | 7 |
| 2004 | 7 | 11 |
| 2005 | 7 | 12 |
| 2006 | 13 | 14 |
| 2007 | 10 | 8 |
| 2008 | 5 | 9 |
| 2009 | 7 | 10 |
| 2010 | 4 | 9 |
| 2011 | 1 | 16 |
| 2012 | 9 | 9 |
| 2013 | 13 | 11 |
| 2014 | 8 | 13 |
| 2015 | 18 | 20 |
| 2016 | 17 | 17 |
| 2017 | 10 | 10 |
| 2018 | 14 | 23 |
| 2019 | 17 | 15 |
| 2020 | 21 | 22 |
| 2021 | 18 | 16 |
| 2022 | 14 | 16 |
| 2023 | 12 | 18 |
| 2024 | 16 | 12 |
| 2025 | 15 | 16 |
| 2026 | 11 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Oilproof assembly, oilproof vent valve, and device with oil tank8 Sep 2026US 12,728,381 B2Huizhou Voir Science & Technology Co., Ltd.
- Check valve and use thereof in a fluid system25 Aug 2026US 12,716,509 B2Vitesco Technologies GmbH
- Diaphragm valve formed using additive manufacture18 Aug 2026US 12,710,102 B2Neptune Technology Group Inc.
- Radiator cap14 Jul 2026US 12,680,619 B2Coplus Inc.
- Balance valve, battery and power consumption apparatus7 Apr 2026US 12,595,859 B2Contemporary Amperex Technology (Hong Kong) Limited
- Oilproof assembly, oilproof vent valve, and device with oil tank13 Aug 2026US 2026/0233149 A1Huizhou Voir Science & Technology Co., Ltd.
- Vent assembly25 Jun 2026US 2026/0177160 A1Donaldson Company, Inc.
- Pressure relief valve9 Apr 2026US 2026/0098589 A1Aisan Kogyo Kabushiki Kaisha
- Valve drive and process valve22 Jan 2026US 2026/0022780 A1GEMÜ Gebr. Müller Apparatebau GmbH & Co. Kommanditgesellschaft
- Water Pump Drain Plug System1 Jan 2026US 2026/0002545 A1
Most cited
By later US patents
- Safety and venting cap for vehicle fuel tanks206US 4,457,325 AGT Development Corporation · 1984
- Anti-free flow valve, enabling fluid flow as a function of pressure and selectively opened to enable free flow160US 5,396,925 AAbbott Laboratories · 1995
- Bi-directional vent and overpressure relief valve153US 5,249,598 AVernay Laboratories, Inc. · 1993
- Valve136US 3,941,149 ABaxter Laboratories, Inc. · 1976
- Mixing adaptor system86US 6,305,413 B1Ultradent Products, Inc. · 2001