F16K 27/0209
Check valves or pivoted valves
Official title: {Check valves or pivoted valves}
F16K27/0209 (Check valves or pivoted valves) appears on 1,014 US grants and 1,066 published applications in this corpus.
Search patents in F16K- Granted patents
- 1,014
- Published applications
- 1,066
- Assignees
- 654
- Inventors
- 2,106
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 6 | 0 |
| 1981 | 7 | 0 |
| 1982 | 4 | 0 |
| 1983 | 7 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 8 | 0 |
| 1987 | 8 | 0 |
| 1988 | 6 | 0 |
| 1989 | 8 | 0 |
| 1990 | 6 | 0 |
| 1991 | 13 | 0 |
| 1992 | 14 | 0 |
| 1993 | 11 | 0 |
| 1994 | 7 | 0 |
| 1995 | 8 | 0 |
| 1996 | 6 | 0 |
| 1997 | 9 | 0 |
| 1998 | 8 | 0 |
| 1999 | 7 | 0 |
| 2000 | 8 | 0 |
| 2001 | 12 | 4 |
| 2002 | 11 | 12 |
| 2003 | 9 | 14 |
| 2004 | 13 | 11 |
| 2005 | 6 | 23 |
| 2006 | 17 | 22 |
| 2007 | 13 | 25 |
| 2008 | 12 | 16 |
| 2009 | 14 | 12 |
| 2010 | 7 | 18 |
| 2011 | 8 | 17 |
| 2012 | 11 | 28 |
| 2013 | 16 | 28 |
| 2014 | 22 | 33 |
| 2015 | 27 | 37 |
| 2016 | 31 | 60 |
| 2017 | 50 | 91 |
| 2018 | 49 | 69 |
| 2019 | 67 | 79 |
| 2020 | 65 | 73 |
| 2021 | 77 | 88 |
| 2022 | 73 | 84 |
| 2023 | 68 | 74 |
| 2024 | 89 | 63 |
| 2025 | 47 | 45 |
| 2026 | 29 | 40 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Schrader valve adapter and optimizer6 Oct 2026US 12,753,852 B2Fieldpiece Instruments, Inc.
- Valve seat assemblies for relief valves22 Sep 2026US 12,742,507 B2Emerson Automation Solutions Final Control US LP
- Foldable, boot loadable, insertable air damper device22 Sep 2026US 12,742,567 B2Arzel Zoning Technology, Inc.
- Check valve and use thereof in a fluid system25 Aug 2026US 12,716,509 B2Vitesco Technologies GmbH
- Multi-functional valve travel stop18 Aug 2026US 12,710,099 B2Bray International, Inc.
- Valve8 Oct 2026US 2026/0309234 A1Horen Cortp Co., Ltd.
- Valve apparatus with a domed valve disc24 Sep 2026US 2026/0287066 A1Wanner Engineering, Inc.
- Throttle Valve Control Device and Press Fit Structure3 Sep 2026US 2026/0258870 A1Hitachi Astemo, Ltd.
- An extensible tubing and a method of facilitating transfer of fluid27 Aug 2026US 2026/0251026 A1MH Tech AS
- Reed valve13 Aug 2026US 2026/0235216 A1
Most cited
By later US patents
- Check valve124US 5,349,984 AHalkey-Roberts Corporation · 1994
- Method and apparatus for separating serum or plasma from the formed elements of the blood91US 4,189,385 A1980
- Butterfly valve assembly and method of manufacture80US 5,370,148 A1994
- Angle dual check valve77US 5,207,242 AA. Y. McDonald Mgf. Co. · 1993
- Swing check valve70US 6,679,290 B2Dixon Bayco Limited · 2004