F04B 43/02
Machines, pumps, or pumping installations having flexible working members: having plate-like flexible
Official title: having plate-like flexible members, e.g. diaphragms (F04B43/14 takes precedence)
F04B43/02 (Machines, pumps, or pumping installations having flexible working members: having plate-like flexible) appears on 3,209 US grants and 3,291 published applications in this corpus.
Search patents in F04B- Granted patents
- 3,209
- Published applications
- 3,291
- Assignees
- 1,361
- Inventors
- 5,139
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 24 | 0 |
| 1977 | 16 | 0 |
| 1978 | 15 | 0 |
| 1979 | 8 | 0 |
| 1980 | 11 | 0 |
| 1981 | 17 | 0 |
| 1982 | 11 | 0 |
| 1983 | 30 | 0 |
| 1984 | 18 | 0 |
| 1985 | 32 | 0 |
| 1986 | 31 | 0 |
| 1987 | 22 | 0 |
| 1988 | 19 | 0 |
| 1989 | 30 | 0 |
| 1990 | 18 | 0 |
| 1991 | 32 | 0 |
| 1992 | 29 | 0 |
| 1993 | 41 | 0 |
| 1994 | 39 | 0 |
| 1995 | 28 | 0 |
| 1996 | 41 | 0 |
| 1997 | 34 | 0 |
| 1998 | 46 | 0 |
| 1999 | 31 | 0 |
| 2000 | 57 | 0 |
| 2001 | 57 | 21 |
| 2002 | 67 | 68 |
| 2003 | 66 | 75 |
| 2004 | 59 | 92 |
| 2005 | 56 | 112 |
| 2006 | 48 | 92 |
| 2007 | 60 | 97 |
| 2008 | 54 | 129 |
| 2009 | 46 | 137 |
| 2010 | 61 | 119 |
| 2011 | 87 | 111 |
| 2012 | 100 | 144 |
| 2013 | 91 | 145 |
| 2014 | 98 | 152 |
| 2015 | 108 | 158 |
| 2016 | 116 | 139 |
| 2017 | 105 | 162 |
| 2018 | 131 | 146 |
| 2019 | 160 | 196 |
| 2020 | 141 | 168 |
| 2021 | 141 | 183 |
| 2022 | 153 | 159 |
| 2023 | 162 | 139 |
| 2024 | 141 | 144 |
| 2025 | 125 | 120 |
| 2026 | 96 | 83 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F04B 43/04Pumps having electric drive1,666
- F04B 43/06Pumps having fluid drive967
- F04B 43/025Two or more plate-like pumping members in parallel324
- F04B 43/028With in- or outlet valve arranged in the plate-like flexible member53
- F04B 43/021The plate-like flexible member is pressed against a wall by a number43
- F04B 43/023Double acting plate-like flexible member35
Recent patents
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- Implantable electromagnetic pumps8 Oct 2026US 2026/0306297 A1Verily Health Inc.
- Diaphragm pump8 Oct 2026US 2026/0309142 A1Ckd Corporation
- Actuator8 Oct 2026US 2026/0314264 A1Murata Manufacturing Co., Ltd.
- Reusable fluid pumping device1 Oct 2026US 2026/0298219 A1CareFusion 303, Inc.
- Hybrid Energy Recovery System24 Sep 2026US 2026/0284597 A1Fluid Equipment Development Company, LLC
Most cited
By later US patents
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- Microfabricated elastomeric valve and pump systems619US 6,408,878 B1California Institute of Technology · 2002
- Methods and apparatus for analyzing polynucleotide sequences612US 6,818,395 B1California Institute of Technology · 2004