F01C 21/0854
By fluid means
Official title: {by fluid means}
F01C21/0854 (By fluid means) appears on 264 US grants and 244 published applications in this corpus.
Search patents in F01C- Granted patents
- 264
- Published applications
- 244
- Assignees
- 109
- Inventors
- 477
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 5 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 7 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 1 |
| 2002 | 4 | 7 |
| 2003 | 6 | 9 |
| 2004 | 6 | 11 |
| 2005 | 8 | 19 |
| 2006 | 8 | 12 |
| 2007 | 3 | 6 |
| 2008 | 5 | 19 |
| 2009 | 19 | 8 |
| 2010 | 6 | 7 |
| 2011 | 7 | 22 |
| 2012 | 5 | 7 |
| 2013 | 8 | 6 |
| 2014 | 11 | 9 |
| 2015 | 12 | 10 |
| 2016 | 4 | 12 |
| 2017 | 13 | 21 |
| 2018 | 14 | 18 |
| 2019 | 9 | 5 |
| 2020 | 12 | 13 |
| 2021 | 8 | 5 |
| 2022 | 9 | 4 |
| 2023 | 6 | 7 |
| 2024 | 9 | 3 |
| 2025 | 1 | 2 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Vane pump featuring fluid lubrication for an impeller17 Mar 2026US 12,577,949 B2Schwäbische Hüttenwerke Automotive GmbH
- Positive displacement rotary machine10 Feb 2026US 12,546,221 B2Tocircle Industries AS
- Rotary compressor with vane support portion to suppress or prevent axial vane tilting25 Mar 2025US 12,258,966 B2LG Electronics Inc.
- Compressor, air conditioner and method for assembling compressor10 Dec 2024US 12,163,521 B2Green Refrigeration Equipment Engineering Research Center of Zhuhai Gree Co., Ltd.
- Fluid transfer apparatus3 Dec 2024US 12,158,149 B2Korea Atomic Energy Research Institute
- Vane pump with hydrostatic pressure plates12 Feb 2026US 2026/0043402 A1Eaton Intelligent Power Limited
- Positive displacement rotary machine18 Sep 2025US 2025/0290420 A1Tocircle Industries AS
- Kidney port configurations in port plates for balanced vanes27 Mar 2025US 2025/0101977 A1Hamilton Sundstrand Corporation
- Vane pump featuring fluid lubrication for an impeller12 Dec 2024US 2024/0410364 A1Schwäbische Hüttenwerke Automotive GmbH
- Rotary compressor19 Sep 2024US 2024/0309870 A1LG Electronics Inc.
Most cited
By later US patents
- Rotary hydraulic vane pump with undervane passages for priming53US 4,386,891 AGeneral Motors Corporation · 1983
- Rotary pump having a hydraulic intermediate capacity with first and second connections48US 6,817,847 B2LuK Fahrzeug-Hydraulik GmbH & Co.KG · 2004
- Elliptical rotary engine34US 6,776,136 B12004
- Variable displacement vane pump, component parts and method30US 5,545,014 AColtec Industries Inc. · 1996
- High efficiency rotary vane motor28US 6,106,255 AThermo King Corporation · 2000