F04F 7/00
Pumps displacing fluids by using inertia thereof
Official title: Pumps displacing fluids by using inertia thereof, e.g. by generating vibrations therein
F04F7/00 (Pumps displacing fluids by using inertia thereof) appears on 172 US grants and 172 published applications in this corpus.
Search patents in F04F- Granted patents
- 172
- Published applications
- 172
- Assignees
- 99
- Inventors
- 339
- Latest grant
- 9 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 0 |
| 2002 | 1 | 4 |
| 2003 | 7 | 14 |
| 2004 | 6 | 8 |
| 2005 | 0 | 8 |
| 2006 | 6 | 9 |
| 2007 | 5 | 2 |
| 2008 | 1 | 8 |
| 2009 | 3 | 8 |
| 2010 | 1 | 17 |
| 2011 | 3 | 8 |
| 2012 | 10 | 6 |
| 2013 | 4 | 9 |
| 2014 | 7 | 13 |
| 2015 | 6 | 7 |
| 2016 | 6 | 6 |
| 2017 | 6 | 8 |
| 2018 | 6 | 1 |
| 2019 | 8 | 6 |
| 2020 | 5 | 6 |
| 2021 | 6 | 3 |
| 2022 | 2 | 4 |
| 2023 | 4 | 5 |
| 2024 | 6 | 6 |
| 2025 | 7 | 4 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Recirculating inertial hydrodynamic pump and wave engine9 Dec 2025US 12,492,673 B2Lone Gull Holdings, Ltd.
- Fluid pump and force generator arrangement with such a fluid pump9 Dec 2025US 12,492,716 B2Tomorrow's Motion GmbH
- Inertial pumps25 Nov 2025US 12,480,532 B2Hewlett-Packard Development Company, L. P.
- Revolving valve for feeding air pulses to a resonance tube for generating low-frequency sound and a method for feeding these pulses in an optimal way11 Nov 2025US 12,469,478 B2Tallstam AB
- Apparatus and methods for medical applications of laser driven microfluid pumps28 Oct 2025US 12,453,814 B2University of Houston System
- Pitot tube pump capable of conducting continuous oil-water separation23 Apr 2026US 2026/0108827 A1Nantong University
- Recirculating inertial hydrodynamic pump and wave engine12 Mar 2026US 2026/0071605 A1Lone Gull Holdings, Ltd.
- Method of making an actuator for a resonant acoustic pump4 Dec 2025US 2025/0369455 A1Lee Ventus Ltd.
- Recirculating inertial hydrodynamic pump and wave engine23 Oct 2025US 2025/0327434 A1Lone Gull Holdings, Ltd.
- Peristaltic pump actuated by piezoelectric transducers26 Jun 2025US 2025/0207578 A1Commissariat A L' Energie Atomique Et Aux Energies Alternatives
Most cited
By later US patents
- Gas pump for stirring molten metal107US 4,355,789 A1982
- Acoustic micropump106US 6,010,316 AThe Board of Trustees of the Leland Stanford Junior University · 2000
- Rod string sonic stimulator and method for facilitating the flow from petroleum wells100US 4,817,712 A1989
- Momentum transfer apparatus78US 5,982,801 AQuantum Sonic Corp., Inc · 1999
- Acoustic pump utilizing radial pressure oscillations73US 8,123,502 B2The Technology Partnership PLC · 2012