F04B 53/1075
The valve being a flexible annular ring
Official title: {the valve being a flexible annular ring}
F04B53/1075 (The valve being a flexible annular ring) appears on 38 US grants and 28 published applications in this corpus.
Search patents in F04B- Granted patents
- 38
- Published applications
- 28
- Assignees
- 27
- Inventors
- 70
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 0 | 2 |
| 2017 | 2 | 2 |
| 2018 | 0 | 2 |
| 2019 | 1 | 0 |
| 2020 | 3 | 2 |
| 2021 | 1 | 6 |
| 2022 | 2 | 1 |
| 2023 | 7 | 2 |
| 2024 | 1 | 4 |
| 2025 | 2 | 1 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Resonant system to pump liquids, measure volume, and detect bubbles86US 5,769,608 AP. D. Coop, Inc. · 1998
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- Mixing apparatus for microflow gradient pumping55US 5,664,938 A1997
- Resilient intake and exhaust valve5US 4,185,946 A1980