F01C 21/0827
By mechanical means
Official title: {by mechanical means}
F01C21/0827 (By mechanical means) appears on 358 US grants and 309 published applications in this corpus.
Search patents in F01C- Granted patents
- 358
- Published applications
- 309
- Assignees
- 149
- Inventors
- 544
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 5 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 6 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 6 | 0 |
| 1991 | 11 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 7 | 0 |
| 1997 | 6 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 9 | 0 |
| 2001 | 5 | 3 |
| 2002 | 5 | 6 |
| 2003 | 8 | 10 |
| 2004 | 10 | 16 |
| 2005 | 7 | 24 |
| 2006 | 13 | 10 |
| 2007 | 8 | 9 |
| 2008 | 6 | 14 |
| 2009 | 17 | 21 |
| 2010 | 10 | 8 |
| 2011 | 7 | 10 |
| 2012 | 10 | 16 |
| 2013 | 8 | 13 |
| 2014 | 9 | 17 |
| 2015 | 17 | 15 |
| 2016 | 21 | 13 |
| 2017 | 8 | 13 |
| 2018 | 11 | 14 |
| 2019 | 11 | 8 |
| 2020 | 7 | 18 |
| 2021 | 9 | 19 |
| 2022 | 17 | 8 |
| 2023 | 12 | 11 |
| 2024 | 10 | 6 |
| 2025 | 8 | 5 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Sliding vane pump or turbine having track followers11 Aug 2026US 12,704,069 B2Amorphic Tech Ltd
- Positive displacement rotary machine10 Feb 2026US 12,546,221 B2Tocircle Industries AS
- Bidirectional rotary hydraulic motor and pump13 Jan 2026US 12,523,153 B2
- Combined sealing piece, volumetric machine and wide fuel engine18 Nov 2025US 12,473,872 B2
- Mechanical seal device7 Oct 2025US 12,435,792 B2Pillar Corporation
- Rotary Vane Internal Combustion Engine17 Sep 2026US 2026/0275869 A1
- Rotary vane pump with angular position sensing capability12 Feb 2026US 2026/0043403 A1Schaeffler Technologies AG & Co. KG
- Positive displacement rotary machine18 Sep 2025US 2025/0290420 A1Tocircle Industries AS
- Mechanical seal device18 Sep 2025US 2025/0290566 A1Pillar Corporation
- Combined Sealing Piece, Volumetric Machine and Wide Fuel Engine19 Jun 2025US 2025/0198363 A1
Most cited
By later US patents
- Sliding-blade rotary air-heat engine with isothermal compression of air99US 5,839,270 A1998
- Vane type compressor having elliptical stator with doubly-offset rotor52US 4,410,305 AThe Rovac Corporation · 1983
- Reduced rotor assembly diameter vane pump47US 7,997,882 B2MAGNA Powertrain AG & Co KG · 2011
- Sliding vane engine42US 5,524,587 AMallen Research Limited Partnership · 1996
- Radial vane rotary engine38US 5,540,199 A1996