F16K 31/20
Actuating a lift valve
Official title: actuating a lift valve
F16K31/20 (Actuating a lift valve) appears on 535 US grants and 393 published applications in this corpus.
Search patents in F16K- Granted patents
- 535
- Published applications
- 393
- Assignees
- 301
- Inventors
- 804
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 4 | 0 |
| 1978 | 7 | 0 |
| 1979 | 5 | 0 |
| 1980 | 9 | 0 |
| 1981 | 7 | 0 |
| 1982 | 10 | 0 |
| 1983 | 2 | 0 |
| 1984 | 6 | 0 |
| 1985 | 3 | 0 |
| 1986 | 6 | 0 |
| 1987 | 9 | 0 |
| 1988 | 13 | 0 |
| 1989 | 6 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 6 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 10 | 0 |
| 1996 | 7 | 0 |
| 1997 | 7 | 0 |
| 1998 | 10 | 0 |
| 1999 | 14 | 0 |
| 2000 | 16 | 0 |
| 2001 | 12 | 6 |
| 2002 | 7 | 4 |
| 2003 | 7 | 6 |
| 2004 | 5 | 8 |
| 2005 | 10 | 8 |
| 2006 | 3 | 8 |
| 2007 | 3 | 10 |
| 2008 | 2 | 10 |
| 2009 | 5 | 13 |
| 2010 | 9 | 14 |
| 2011 | 10 | 8 |
| 2012 | 14 | 12 |
| 2013 | 13 | 14 |
| 2014 | 7 | 14 |
| 2015 | 8 | 16 |
| 2016 | 18 | 24 |
| 2017 | 22 | 34 |
| 2018 | 26 | 34 |
| 2019 | 32 | 27 |
| 2020 | 34 | 33 |
| 2021 | 27 | 21 |
| 2022 | 28 | 20 |
| 2023 | 10 | 15 |
| 2024 | 20 | 17 |
| 2025 | 15 | 9 |
| 2026 | 6 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
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Most cited
By later US patents
- Apparatus and method for treating storm water runoff129US 5,707,527 AStormwater Treatment LLC · 1998
- Separation valve77US 5,918,622 ABermad · 1999
- Magnetic automatic stop valve73US 6,695,004 B1Alaris Medical Systems, Inc. · 2004
- Self-cleaning siphon-actuated radial flow filter basket64US 6,027,639 AStormwater Treatment LLC · 2000
- Pressurized fluid apparatus56US 6,026,841 A2000