F01C 1/30
Rotary-piston machines or engines: having the characteristics covered by two or more
Official title: having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
F01C1/30 (Rotary-piston machines or engines: having the characteristics covered by two or more) appears on 819 US grants and 533 published applications in this corpus.
Search patents in F01C- Granted patents
- 819
- Published applications
- 533
- Assignees
- 252
- Inventors
- 1,048
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 54 | 0 |
| 1977 | 22 | 0 |
| 1978 | 21 | 0 |
| 1979 | 12 | 0 |
| 1980 | 19 | 0 |
| 1981 | 8 | 0 |
| 1982 | 9 | 0 |
| 1983 | 15 | 0 |
| 1984 | 22 | 0 |
| 1985 | 11 | 0 |
| 1986 | 4 | 0 |
| 1987 | 15 | 0 |
| 1988 | 7 | 0 |
| 1989 | 8 | 0 |
| 1990 | 5 | 0 |
| 1991 | 8 | 0 |
| 1992 | 9 | 0 |
| 1993 | 7 | 0 |
| 1994 | 13 | 0 |
| 1995 | 9 | 0 |
| 1996 | 16 | 0 |
| 1997 | 7 | 0 |
| 1998 | 17 | 0 |
| 1999 | 9 | 0 |
| 2000 | 25 | 0 |
| 2001 | 17 | 3 |
| 2002 | 17 | 10 |
| 2003 | 27 | 20 |
| 2004 | 17 | 27 |
| 2005 | 21 | 34 |
| 2006 | 22 | 30 |
| 2007 | 12 | 22 |
| 2008 | 17 | 33 |
| 2009 | 17 | 29 |
| 2010 | 22 | 31 |
| 2011 | 18 | 31 |
| 2012 | 22 | 16 |
| 2013 | 17 | 22 |
| 2014 | 26 | 31 |
| 2015 | 18 | 27 |
| 2016 | 22 | 30 |
| 2017 | 19 | 20 |
| 2018 | 26 | 20 |
| 2019 | 19 | 13 |
| 2020 | 17 | 21 |
| 2021 | 18 | 25 |
| 2022 | 20 | 9 |
| 2023 | 9 | 12 |
| 2024 | 12 | 5 |
| 2025 | 8 | 8 |
| 2026 | 7 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F01C 1/34Having the movement defined in group f01c1/08 or f01c1/22 and relative reciprocation537
- F01C 1/40Having the movement defined in group f01c1/08 or f01c1/22 and having a201
- F01C 1/32Having both the movement defined in group f01c1/02 and relative reciprocation between88
- F01C 1/36Having both the movements defined in sub-groups f01c1/22 and f01c1/2442
- F01C 1/38Having the movement defined in group f01c1/02 and having a hinged member15
Recent patents
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- Rotary Vane Internal Combustion Engine17 Sep 2026US 2026/0275869 A1
- Rotor-stator assembly for a rotary engine, compressor or pump, a rotary engine and a lifting unit and device25 Jun 2026US 2026/0176971 A1
- Coulisse - eccentric motor2 Apr 2026US 2026/0092598 A1
- Rotary pump or motor with improved intake, exhaust, vane and bearingless sleeve features4 Dec 2025US 2025/0369440 A1
Most cited
By later US patents
- Rotary engine expansion chamber apparatus and method of operation therefor140US 8,523,547 B22013
- Sliding-blade rotary air-heat engine with isothermal compression of air99US 5,839,270 A1998
- Enhanced method of closed vessel combustion79US 6,283,087 B12001
- Method and apparatus for transferring heat energy from engine housing to expansion fluid employed in continuous combustion, pinned vane type, integrated rotary compressor-expander engine system67US 5,522,356 ASpread Spectrum · 1996
- High efficiency positive displacement thermodynamic system67US 8,424,284 B22013