F16K 15/1841
For check valves with a hinged closure member
Official title: {for check valves with a hinged closure member}
F16K15/1841 (For check valves with a hinged closure member) appears on 7 US grants and 4 published applications in this corpus.
Search patents in F16K- Granted patents
- 7
- Published applications
- 4
- Assignees
- 7
- Inventors
- 14
- Latest grant
- 2 Aug 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Combination control and check valve assembly for a wet piping system2 Aug 2022US 11,402,028 B2Victaulic Company
- Butterfly check valve24 May 2022US 11,339,882 B1AGF Manufacturing, Inc.
- Combination control and check valve assembly for a wet piping system15 Sep 2020US 10,774,937 B2Victaulic Company
- System, method and apparatus for combined ball segment valve and check valve12 Jan 2016US 9,234,598 B2Saudi Arabian Oil Company
- Water flow detection device20 Aug 2013US 8,511,338 B2Senju Sprinkler Co., Ltd.
- Combination control and check valve assembly for a wet piping system13 May 2021US 2021/0138283 A1Victaulic Company
- Combination control and check valve assembly for a wet piping system3 Oct 2019US 2019/0301625 A1Globe Fire Sprinkler Corporation
- System, method and apparatus for combined ball segment valve and check valve12 Nov 2015US 2015/0323087 A1Saudi Arabian Oil Company
- Water flow detection device7 Apr 2011US 2011/0079301 A1Senju Sprinkler Co., Ltd.
Most cited
By later US patents
- Position indicating check valve46US 6,152,173 AVal-Matic Valve & Manufacturing Corp. · 2000
- Main steam isolation check valve16US 3,972,504 AAmetek, Inc. · 1976
- Combination control and check valve assembly for a wet piping system5US 10,774,937 B2Victaulic Company · 2020
- Water flow detection device3US 8,511,338 B2Senju Sprinkler Co., Ltd. · 2013