F04B 43/08
Machines, pumps, or pumping installations having flexible working members: having tubular flexible
Official title: having tubular flexible members (F04B43/12 takes precedence)
F04B43/08 (Machines, pumps, or pumping installations having flexible working members: having tubular flexible) appears on 1,233 US grants and 1,067 published applications in this corpus.
Search patents in F04B- Granted patents
- 1,233
- Published applications
- 1,067
- Assignees
- 556
- Inventors
- 1,929
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 19 | 0 |
| 1977 | 19 | 0 |
| 1978 | 17 | 0 |
| 1979 | 8 | 0 |
| 1980 | 8 | 0 |
| 1981 | 9 | 0 |
| 1982 | 9 | 0 |
| 1983 | 7 | 0 |
| 1984 | 17 | 0 |
| 1985 | 8 | 0 |
| 1986 | 9 | 0 |
| 1987 | 6 | 0 |
| 1988 | 10 | 0 |
| 1989 | 12 | 0 |
| 1990 | 16 | 0 |
| 1991 | 19 | 0 |
| 1992 | 23 | 0 |
| 1993 | 18 | 0 |
| 1994 | 24 | 0 |
| 1995 | 8 | 0 |
| 1996 | 25 | 0 |
| 1997 | 10 | 0 |
| 1998 | 22 | 0 |
| 1999 | 20 | 0 |
| 2000 | 21 | 0 |
| 2001 | 26 | 5 |
| 2002 | 21 | 15 |
| 2003 | 17 | 17 |
| 2004 | 10 | 26 |
| 2005 | 16 | 23 |
| 2006 | 13 | 18 |
| 2007 | 7 | 31 |
| 2008 | 16 | 29 |
| 2009 | 6 | 31 |
| 2010 | 15 | 43 |
| 2011 | 22 | 39 |
| 2012 | 34 | 64 |
| 2013 | 46 | 56 |
| 2014 | 35 | 66 |
| 2015 | 52 | 57 |
| 2016 | 52 | 48 |
| 2017 | 41 | 71 |
| 2018 | 43 | 45 |
| 2019 | 60 | 58 |
| 2020 | 66 | 49 |
| 2021 | 39 | 66 |
| 2022 | 48 | 52 |
| 2023 | 51 | 39 |
| 2024 | 51 | 55 |
| 2025 | 48 | 39 |
| 2026 | 34 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F04B 43/082The tubular flexible member being pressed against a wall by a number341
- F04B 43/09Pumps having electric drive328
- F04B 43/10Pumps having fluid drive325
- F04B 43/084The tubular member being deformed by stretching or distortion107
- F04B 43/086With two or more tubular flexible members in parallel82
- F04B 43/088With two or more tubular flexible members in series29
Recent patents
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- Bellows pump for liquid metals8 Oct 2026US 2026/0309143 A1Westinghouse Electric Corp.
- A flap valve magnetorheological micropump8 Oct 2026US 2026/0309144 A1Georgia Southern University Research and Service Foundation, Inc.
- Expandable, inner liner pump1 Oct 2026US 2026/0298221 A1Viking Pump, Inc.
- Expandable device for a body cavity27 Aug 2026US 2026/0249060 A1IP Holding Company
- Compressor with integrated cooling20 Aug 2026US 2026/0247575 A1Icebox Heat Pumps Inc.
Most cited
By later US patents
- Drug pump systems and methods1,088US 5,935,099 ASIMS Deltec, Inc. · 1999
- Pump simulation apparatus1,024US 5,485,408 ASIMS Deltec, Inc. · 1996
- Systems and methods for communicating with ambulatory medical devices such as drug delivery devices851US 5,338,157 APharmacia Deltec, Inc. · 1994
- Ambulatory infusion pump679US 5,482,446 ABaxter International Inc. · 1996
- Drug pump systems and methods658US 6,241,704 B1SIMS Deltec, Inc. · 2001