F04B 45/04
Pumps or pumping installations having flexible working members and specially adapted for
Official title: having plate-like flexible members, e.g. diaphragms (F04B45/10 takes precedence)
F04B45/04 (Pumps or pumping installations having flexible working members and specially adapted for) appears on 900 US grants and 1,079 published applications in this corpus.
Search patents in F04B- Granted patents
- 900
- Published applications
- 1,079
- Assignees
- 426
- Inventors
- 1,485
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 2 | 0 |
| 1978 | 6 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 7 | 3 |
| 2002 | 10 | 10 |
| 2003 | 8 | 16 |
| 2004 | 11 | 15 |
| 2005 | 8 | 15 |
| 2006 | 10 | 7 |
| 2007 | 5 | 18 |
| 2008 | 7 | 24 |
| 2009 | 8 | 23 |
| 2010 | 9 | 8 |
| 2011 | 8 | 22 |
| 2012 | 11 | 21 |
| 2013 | 16 | 39 |
| 2014 | 21 | 33 |
| 2015 | 32 | 61 |
| 2016 | 31 | 56 |
| 2017 | 45 | 90 |
| 2018 | 48 | 90 |
| 2019 | 68 | 99 |
| 2020 | 98 | 95 |
| 2021 | 74 | 91 |
| 2022 | 67 | 66 |
| 2023 | 76 | 50 |
| 2024 | 71 | 51 |
| 2025 | 52 | 36 |
| 2026 | 39 | 40 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F04B 45/047Pumps having electric drive587
- F04B 45/043Two or more plate-like pumping flexible members in parallel174
- F04B 45/053Pumps having fluid drive137
- F04B 45/045With in- or outlet valve arranged in the plate-like pumping flexible members33
- F04B 45/041Double acting plate-like flexible pumping member22
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Most cited
By later US patents
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- Cassette system integrated apparatus229US 7,967,022 B2DEKA Products Limited Partnership · 2011
- Physiological monitoring device attachment assembly228US 11,678,829 B2Masimo Corporation · 2023
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