F04B 43/00
Machines, pumps, or pumping installations having flexible working members
Official title: Machines, pumps, or pumping installations having flexible working members (pumps or pumping installations specially adapted for elastic fluids F04B45/00)
F04B43/00 (Machines, pumps, or pumping installations having flexible working members) appears on 5,437 US grants and 5,158 published applications in this corpus.
Search patents in F04B- Granted patents
- 5,437
- Published applications
- 5,158
- Assignees
- 2,203
- Inventors
- 8,768
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 61 | 0 |
| 1977 | 43 | 0 |
| 1978 | 43 | 0 |
| 1979 | 28 | 0 |
| 1980 | 42 | 0 |
| 1981 | 39 | 0 |
| 1982 | 24 | 0 |
| 1983 | 46 | 0 |
| 1984 | 49 | 0 |
| 1985 | 74 | 0 |
| 1986 | 58 | 0 |
| 1987 | 46 | 0 |
| 1988 | 41 | 0 |
| 1989 | 57 | 0 |
| 1990 | 52 | 0 |
| 1991 | 71 | 0 |
| 1992 | 74 | 0 |
| 1993 | 82 | 0 |
| 1994 | 79 | 0 |
| 1995 | 62 | 0 |
| 1996 | 89 | 0 |
| 1997 | 63 | 0 |
| 1998 | 84 | 0 |
| 1999 | 68 | 0 |
| 2000 | 102 | 0 |
| 2001 | 106 | 34 |
| 2002 | 97 | 104 |
| 2003 | 103 | 109 |
| 2004 | 86 | 152 |
| 2005 | 86 | 174 |
| 2006 | 74 | 149 |
| 2007 | 83 | 164 |
| 2008 | 79 | 204 |
| 2009 | 74 | 195 |
| 2010 | 102 | 178 |
| 2011 | 127 | 162 |
| 2012 | 159 | 216 |
| 2013 | 152 | 228 |
| 2014 | 144 | 250 |
| 2015 | 173 | 257 |
| 2016 | 178 | 220 |
| 2017 | 186 | 264 |
| 2018 | 198 | 247 |
| 2019 | 250 | 270 |
| 2020 | 248 | 278 |
| 2021 | 222 | 281 |
| 2022 | 215 | 244 |
| 2023 | 232 | 217 |
| 2024 | 217 | 242 |
| 2025 | 206 | 185 |
| 2026 | 163 | 134 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F04B 43/02Machines, pumps, or pumping installations having flexible working members: having plate-like flexible3,209
- F04B 43/12Machines, pumps, or pumping installations having flexible working members: having peristaltic action1,686
- F04B 43/08Machines, pumps, or pumping installations having flexible working members: having tubular flexible1,233
- F04B 43/0009Special features1,110
Recent patents
- Pumping device6 Oct 2026US 12,752,291 B2Tianzhou Medical (Suzhou) Co., Ltd
- Reward dispenser for pet29 Sep 2026US 12,745,752 B2Joipaw Ltd
- Foot support systems including fluid movement controllers and adjustable foot support pressure29 Sep 2026US 12,745,822 B2NIKE, Inc.
- Devices, systems, and methods for priming a fluid management system29 Sep 2026US 12,746,325 B2Boston Scientific Scimed, Inc.
- Pump device29 Sep 2026US 12,747,725 B2Iwaki Co., Ltd.
- Implantable electromagnetic pumps8 Oct 2026US 2026/0306297 A1Verily Health Inc.
- Modular multiplatform system for mrna drug production8 Oct 2026US 2026/0306407 A1BioNTech SE
- Pumping system and method for home healthcare devices8 Oct 2026US 2026/0306727 A1
- Diaphragm pump8 Oct 2026US 2026/0309142 A1Ckd Corporation
- Bellows pump for liquid metals8 Oct 2026US 2026/0309143 A1Westinghouse Electric Corp.
Most cited
By later US patents
- Electroactive polymer devices1,577US 6,545,384 B1SRI International · 2003
- Self-adjusting pump head and safety manifold cartridge for a peristaltic pump1,565US 5,447,417 AValleylab, Inc. · 1995
- Electroactive polymer electrodes1,515US 6,583,533 B2SRI International · 2003
- Hose pump for the exact dosing of small quantities of liquids1,512US 5,693,020 ALoctite Europa E.E.I.G. (E.W.I.V.) · 1997
- Drug pump systems and methods1,088US 5,935,099 ASIMS Deltec, Inc. · 1999