F04C 14/08
Control of, monitoring of, or safety arrangements for, machines, pumps or pumping
Official title: characterised by varying the rotational speed
F04C14/08 (Control of, monitoring of, or safety arrangements for, machines, pumps or pumping) appears on 193 US grants and 185 published applications in this corpus.
Search patents in F04C- Granted patents
- 193
- Published applications
- 185
- Assignees
- 147
- Inventors
- 374
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 4 | 0 |
| 2000 | 9 | 0 |
| 2001 | 1 | 0 |
| 2002 | 5 | 5 |
| 2003 | 6 | 6 |
| 2004 | 3 | 5 |
| 2005 | 5 | 6 |
| 2006 | 2 | 2 |
| 2007 | 2 | 1 |
| 2008 | 3 | 6 |
| 2009 | 2 | 2 |
| 2010 | 2 | 5 |
| 2011 | 4 | 5 |
| 2012 | 3 | 4 |
| 2013 | 3 | 11 |
| 2014 | 8 | 6 |
| 2015 | 5 | 8 |
| 2016 | 5 | 12 |
| 2017 | 3 | 15 |
| 2018 | 4 | 15 |
| 2019 | 12 | 9 |
| 2020 | 18 | 7 |
| 2021 | 9 | 12 |
| 2022 | 7 | 17 |
| 2023 | 12 | 9 |
| 2024 | 14 | 10 |
| 2025 | 10 | 5 |
| 2026 | 6 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Progressive cavity pump system having reverse mode8 Sep 2026US 12,729,682 B2Schlumberger Technology Corporation
- Diagnostic checks of a gear pump in a fluid system25 Aug 2026US 12,716,414 B2Project Phoenix, LLC
- Fluid handling protection system28 Jul 2026US 12,693,692 B2Binks US, LLC
- Fluid rotary machine with an encoder module23 Jun 2026US 12,662,985 B2Danfoss Power Solutions ApS
- Pump and method to attenuate pulses at the discharge24 Mar 2026US 12,584,483 B2Magpumps Limited
- Dynamic control of gears in a gear pump having a drive-drive configuration23 Jul 2026US 2026/0210355 A1Project Phoenix, LLC
- Method for controlling a circulation pump2 Jul 2026US 2026/0185528 A1Grundfos Holding A/S
- Electric pump system3 Jul 2025US 2025/0215872 A1KYB Corporation
- Fluid rotary machine with an encoder module26 Jun 2025US 2025/0207583 A1Danfoss Power Solutions ApS
- Fluid handling protection system19 Jun 2025US 2025/0199550 A1Binks US, LLC
Most cited
By later US patents
- System and method for driving a pump174US 8,801,394 B2Solar Turbines Incorporated · 2014
- Method and apparatus for controlling a submergible pumping system104US 6,045,333 ACamco International Inc. · 2000
- Method and apparatus for accurately dispensing liquids and solids72US 5,857,589 AFluid Research Corporation · 1999
- Fluid level control for a downhole well pumping system65US 6,497,556 B2CDX Gas, LLC · 2002
- Usable device, in particular for the pumping of an extremely viscous fluid and/or containing a sizeable proportion of gas, particularly for petrol production61US 4,718,824 AInstitut Francais du Petrole · 1988