F16K 15/1825
For check valves with flexible valve members
Official title: {for check valves with flexible valve members}
F16K15/1825 (For check valves with flexible valve members) appears on 134 US grants and 140 published applications in this corpus.
Search patents in F16K- Granted patents
- 134
- Published applications
- 140
- Assignees
- 113
- Inventors
- 301
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 2 |
| 2003 | 4 | 10 |
| 2004 | 3 | 4 |
| 2005 | 1 | 3 |
| 2006 | 2 | 3 |
| 2007 | 1 | 4 |
| 2008 | 0 | 2 |
| 2009 | 1 | 4 |
| 2010 | 2 | 3 |
| 2011 | 1 | 3 |
| 2012 | 3 | 6 |
| 2013 | 2 | 2 |
| 2014 | 3 | 3 |
| 2015 | 5 | 6 |
| 2016 | 4 | 5 |
| 2017 | 6 | 15 |
| 2018 | 7 | 9 |
| 2019 | 7 | 13 |
| 2020 | 15 | 10 |
| 2021 | 10 | 10 |
| 2022 | 11 | 7 |
| 2023 | 6 | 5 |
| 2024 | 4 | 1 |
| 2025 | 4 | 4 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Air valve, inflation, and deflation apparatuses and methods29 Sep 2026US 12,747,801 B2Belgravia Wood Limited
- Pneumatic valve17 Mar 2026US 12,578,025 B2AUMOVIO Germany GmbH
- Radiofrequency enabled filtering facepiece respirator23 Dec 2025US 12,502,564 B2
- Zone control devices, systems and methods16 Dec 2025US 12,498,049 B2Rain Bird Corporation
- Filtering facepiece respirator with an adjustable inhalation-exhalation valve2 Sep 2025US 12,403,338 B2
- Inflation valve assembly27 Aug 2026US 2026/0251229 A1Purple Line Limited
- Automatic shut off valve20 Aug 2026US 2026/0243352 A1Enerco Group, Inc.
- One-piece fill valve for powered fastener driver30 Jul 2026US 2026/0216852 A1
- Zone Control Devices, Systems And Methods12 Mar 2026US 2026/0071688 A1Rain Bird Corporation
- Filtering facepiece respirator with an adjustable inhalation-exhalation valve26 Feb 2026US 2026/0054106 A1
Most cited
By later US patents
- Normally closed automatic reflux valve335US 4,683,916 ABurron Medical Inc. · 1987
- Luer-activated check valve281US 5,535,785 ANypro Inc. · 1996
- Slit-type swabable valve236US 6,651,956 B2Halkey-Roberts Corporation · 2003
- Valved male luer connector having sequential valve timing190US 7,044,441 B2Cardinal Health 303, Inc. · 2006
- 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