F02B 2053/005
Wankel engines
Official title: {Wankel engines}
F02B2053/005 (Wankel engines) appears on 610 US grants and 213 published applications in this corpus.
Search patents in F02B- Granted patents
- 610
- Published applications
- 213
- Assignees
- 125
- Inventors
- 614
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 79 | 0 |
| 1977 | 38 | 0 |
| 1978 | 35 | 0 |
| 1979 | 14 | 0 |
| 1980 | 15 | 0 |
| 1981 | 3 | 0 |
| 1982 | 11 | 0 |
| 1983 | 7 | 0 |
| 1984 | 9 | 0 |
| 1985 | 8 | 0 |
| 1986 | 9 | 0 |
| 1987 | 18 | 0 |
| 1988 | 13 | 0 |
| 1989 | 12 | 0 |
| 1990 | 9 | 0 |
| 1991 | 9 | 0 |
| 1992 | 13 | 0 |
| 1993 | 13 | 0 |
| 1994 | 10 | 0 |
| 1995 | 16 | 0 |
| 1996 | 16 | 0 |
| 1997 | 5 | 0 |
| 1998 | 11 | 0 |
| 1999 | 3 | 0 |
| 2000 | 12 | 0 |
| 2001 | 8 | 2 |
| 2002 | 14 | 12 |
| 2003 | 10 | 15 |
| 2004 | 10 | 5 |
| 2005 | 4 | 8 |
| 2006 | 2 | 3 |
| 2007 | 1 | 4 |
| 2008 | 2 | 4 |
| 2009 | 3 | 4 |
| 2010 | 0 | 2 |
| 2011 | 1 | 6 |
| 2012 | 3 | 2 |
| 2013 | 4 | 5 |
| 2014 | 8 | 8 |
| 2015 | 3 | 6 |
| 2016 | 8 | 13 |
| 2017 | 8 | 15 |
| 2018 | 17 | 19 |
| 2019 | 15 | 19 |
| 2020 | 24 | 17 |
| 2021 | 18 | 13 |
| 2022 | 21 | 5 |
| 2023 | 6 | 6 |
| 2024 | 17 | 9 |
| 2025 | 11 | 6 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Tool for assembly and storage of rotary engine6 Oct 2026US 12,752,382 B2Pratt & Whitney Canada Corp.
- Fretting resistant rotary engine housings18 Aug 2026US 12,709,983 B2Pratt & Whitney Canada Corp.
- Tractor aircraft power plant with swirl recovery vanes2 Jun 2026US 12,644,407 B2Pratt & Whitney Canada Corp.
- Rotary combustion engine with integrated multistage fuel system6 Jan 2026US 12,516,623 B2
- Housing assembly for rotary engine and method of manufacturing thereof23 Dec 2025US 12,503,975 B1Pratt & Whitney Canada Corp.
- Rotary internal combustion engine with integrated pump8 Oct 2026US 2026/0309074 A1Pratt & Whitney Canada Corp.
- Egr system for rotary engine13 Aug 2026US 2026/0235067 A1Mazda Motor Corporation
- Rotary Engine Housing16 Jul 2026US 2026/0201831 A1Pratt & Whitney Canada Corp.
- Tractor aircraft power plant with swirl recovery vanes21 May 2026US 2026/0139618 A1Pratt & Whitney Canada Corp.
- Housing assembly for rotary engine and method of manufacturing thereof19 Mar 2026US 2026/0078695 A1Pratt & Whitney Canada Corp.
Most cited
By later US patents
- External combustion slidable vane motor with air cushions149US 4,672,813 A1987
- Internal combustion engine with compound air compression138US 5,362,219 A1994
- Rotary positive displacement device134US 5,431,551 A1995
- Method of operating an engine assembly114US 10,590,867 B2Pratt & Whitney Canada Corp. · 2020
- 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