F16K 15/141
The closure elements not being fixed to the valve body
Official title: {the closure elements not being fixed to the valve body}
F16K15/141 (The closure elements not being fixed to the valve body) appears on 252 US grants and 146 published applications in this corpus.
Search patents in F16K- Granted patents
- 252
- Published applications
- 146
- Assignees
- 186
- Inventors
- 451
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 10 | 0 |
| 1981 | 9 | 0 |
| 1982 | 6 | 0 |
| 1983 | 5 | 0 |
| 1984 | 5 | 0 |
| 1985 | 10 | 0 |
| 1986 | 3 | 0 |
| 1987 | 8 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 10 | 0 |
| 1991 | 4 | 0 |
| 1992 | 7 | 0 |
| 1993 | 2 | 0 |
| 1994 | 6 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 5 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 7 | 0 |
| 2002 | 1 | 5 |
| 2003 | 5 | 7 |
| 2004 | 9 | 6 |
| 2005 | 4 | 7 |
| 2006 | 2 | 10 |
| 2007 | 6 | 8 |
| 2008 | 5 | 3 |
| 2009 | 5 | 5 |
| 2010 | 3 | 4 |
| 2011 | 5 | 3 |
| 2012 | 3 | 9 |
| 2013 | 8 | 9 |
| 2014 | 5 | 5 |
| 2015 | 7 | 5 |
| 2016 | 6 | 8 |
| 2017 | 4 | 7 |
| 2018 | 6 | 7 |
| 2019 | 8 | 6 |
| 2020 | 6 | 8 |
| 2021 | 8 | 5 |
| 2022 | 3 | 5 |
| 2023 | 6 | 5 |
| 2024 | 5 | 4 |
| 2025 | 2 | 2 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
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- Air admittance valve assembly21 May 2026US 2026/0139750 A1
- Valve body structure of a valve device for a weather-sealing check valve and method therefor30 Apr 2026US 2026/0117878 A1Knorr-Bremse GmbH
- On-off valve and liquid supply path system1 Jan 2026US 2026/0000238 A1Kalerm Technology (Suzhou) Co., Ltd
- Check valve and compact pump system3 Jul 2025US 2025/0215984 A1Equilibar, LLC
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Most cited
By later US patents
- Luer-activated check valve281US 5,535,785 ANypro Inc. · 1996
- Syringe pumping system with valves208US 4,210,173 AAmerican Hospital Supply Corporation · 1980
- Normally closed check valve176US 4,535,820 ABurron Medical Inc. · 1985
- Slit valve medical catheter142US 4,973,319 ATherex Corp. · 1990
- Aspiration assembly having dual co-axial check valves127US 4,729,401 ABurron Medical Inc. · 1988