F01C 11/006
Combinations of two or more machines or engines, each being of rotary-piston
Official title: {of dissimilar working principle}
F01C11/006 (Combinations of two or more machines or engines, each being of rotary-piston) appears on 173 US grants and 181 published applications in this corpus.
Search patents in F01C- Granted patents
- 173
- Published applications
- 181
- Assignees
- 52
- Inventors
- 239
- Latest grant
- 27 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 1 |
| 2002 | 3 | 2 |
| 2003 | 5 | 6 |
| 2004 | 10 | 9 |
| 2005 | 6 | 9 |
| 2006 | 6 | 10 |
| 2007 | 3 | 10 |
| 2008 | 3 | 8 |
| 2009 | 5 | 9 |
| 2010 | 7 | 11 |
| 2011 | 7 | 11 |
| 2012 | 10 | 3 |
| 2013 | 4 | 10 |
| 2014 | 9 | 6 |
| 2015 | 5 | 12 |
| 2016 | 3 | 16 |
| 2017 | 11 | 11 |
| 2018 | 13 | 14 |
| 2019 | 8 | 5 |
| 2020 | 16 | 9 |
| 2021 | 6 | 4 |
| 2022 | 4 | 2 |
| 2023 | 3 | 1 |
| 2024 | 1 | 2 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Integrated internal continuous combustion rotary engine27 May 2025US 12,312,960 B1
- Aircraft power plant with detonation combustion tube21 Jan 2025US 12,203,429 B2Pratt & Whitney Canada Corp.
- Compressor and refrigeration cycle device15 Oct 2024US 12,117,214 B2Gree Green Refrigeration Technology Center Co., Ltd. of Zhuhai
- Fluid circulation system and method for operating same, computer-readable medium, and controller26 Sep 2023US 11,767,758 B2Emerson Climate Technologies (Suzhou) Co., Ltd.
- Aircraft engine with clutch and mechanical lock28 Mar 2023US 11,613,348 B2Pratt & Whitney Canada Corp.
- Concentric rotary machine5 Sep 2024US 2024/0295174 A1
- Aircraft power plant with detonation combustion tube20 Jun 2024US 2024/0200510 A1Pratt & Whitney Canada Corp.
- Pistonless combustion flywheel engine design for low fuel consumption21 Dec 2023US 2023/0407780 A1Halo3 Holdings LLC
- Fluid circulation system and method for operating same, computer-readable medium, and controller3 Nov 2022US 2022/0349307 A1Emerson Climate Technologies (Suzhou) Co., Ltd.
- Aircraft engine with clutch and mechanical lock7 Apr 2022US 2022/0106032 A1Pratt & Whitney Canada Corp.
Most cited
By later US patents
- Compound cycle rotary engine85US 7,753,036 B2United Technologies Corporation · 2010
- Aircraft compound cycle propulsion engine54US 5,692,372 AROLLS-ROYCE plc · 1997
- Thermodynamic rotary engine53US 4,553,513 A1985
- Rankine cycle device, expansion system and expansion machine41US 9,732,634 B2Panasonic Intellectual Property Management Co., Ltd. · 2017
- Rotary type fluid machine, vane type fluid machine, and waste heat recovering device for internal combustion engine40US 6,675,765 B2Honda Giken Kogyo Kabushiki Kaisha · 2004