F04B 43/04
Pumps having electric drive
F04B43/04 (Pumps having electric drive) appears on 1,666 US grants and 1,934 published applications in this corpus.
Search patents in F04B- Granted patents
- 1,666
- Published applications
- 1,934
- Assignees
- 807
- Inventors
- 3,034
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 7 | 0 |
| 1986 | 8 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 13 | 0 |
| 1990 | 9 | 0 |
| 1991 | 12 | 0 |
| 1992 | 12 | 0 |
| 1993 | 16 | 0 |
| 1994 | 18 | 0 |
| 1995 | 10 | 0 |
| 1996 | 12 | 0 |
| 1997 | 11 | 0 |
| 1998 | 24 | 0 |
| 1999 | 11 | 0 |
| 2000 | 19 | 0 |
| 2001 | 28 | 13 |
| 2002 | 29 | 44 |
| 2003 | 42 | 44 |
| 2004 | 39 | 64 |
| 2005 | 27 | 70 |
| 2006 | 29 | 62 |
| 2007 | 52 | 64 |
| 2008 | 39 | 80 |
| 2009 | 28 | 97 |
| 2010 | 41 | 82 |
| 2011 | 66 | 65 |
| 2012 | 61 | 68 |
| 2013 | 52 | 89 |
| 2014 | 55 | 81 |
| 2015 | 64 | 77 |
| 2016 | 65 | 67 |
| 2017 | 50 | 96 |
| 2018 | 61 | 91 |
| 2019 | 92 | 116 |
| 2020 | 70 | 100 |
| 2021 | 95 | 108 |
| 2022 | 82 | 91 |
| 2023 | 94 | 77 |
| 2024 | 74 | 75 |
| 2025 | 68 | 67 |
| 2026 | 54 | 46 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Pump device29 Sep 2026US 12,747,725 B2Iwaki Co., Ltd.
- Micromembrane pumping device29 Sep 2026US 12,747,726 B2Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e. V.
- Piezoelectric MEMS-based active cooling for heat dissipation in compute devices22 Sep 2026US 12,745,638 B2Frore Systems Inc.
- Liquid feeding device and inkjet recording apparatus15 Sep 2026US 12,736,043 B2KYOCERA Document Solutions Inc.
- Tuned micro check valves and pumps15 Sep 2026US 12,736,044 B2Q T Flow Ltd
- Implantable electromagnetic pumps8 Oct 2026US 2026/0306297 A1Verily Health Inc.
- Actuator8 Oct 2026US 2026/0314264 A1Murata Manufacturing Co., Ltd.
- Multiple displacement pump24 Sep 2026US 2026/0286947 A1Lutz Pumpen GmbH
- Multiple displacement pump24 Sep 2026US 2026/0286948 A1Lutz Pumpen GmbH
- Negative pressure wound therapy apparatus and methods17 Sep 2026US 2026/0273165 A1Smith & Nephew, Inc.
Most cited
By later US patents
- Electroactive polymer devices1,577US 6,545,384 B1SRI International · 2003
- Electroactive polymer electrodes1,515US 6,583,533 B2SRI International · 2003
- 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
- Methods and apparatus for analyzing polynucleotide sequences567US 6,911,345 B2California Institute of Technology · 2005