F02B 53/02
Methods of operating
F02B53/02 (Methods of operating) appears on 296 US grants and 243 published applications in this corpus.
Search patents in F02B- Granted patents
- 296
- Published applications
- 243
- Assignees
- 80
- Inventors
- 353
- Latest grant
- 23 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 7 | 0 |
| 1994 | 5 | 0 |
| 1995 | 9 | 0 |
| 1996 | 8 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 0 |
| 2002 | 7 | 1 |
| 2003 | 5 | 6 |
| 2004 | 6 | 10 |
| 2005 | 5 | 9 |
| 2006 | 4 | 9 |
| 2007 | 4 | 18 |
| 2008 | 8 | 17 |
| 2009 | 6 | 8 |
| 2010 | 8 | 12 |
| 2011 | 2 | 10 |
| 2012 | 8 | 5 |
| 2013 | 10 | 8 |
| 2014 | 7 | 12 |
| 2015 | 11 | 19 |
| 2016 | 12 | 15 |
| 2017 | 8 | 14 |
| 2018 | 23 | 17 |
| 2019 | 12 | 14 |
| 2020 | 19 | 8 |
| 2021 | 14 | 10 |
| 2022 | 12 | 11 |
| 2023 | 8 | 4 |
| 2024 | 8 | 1 |
| 2025 | 6 | 5 |
By publication year. Applications have been published since 2001.
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Most cited
By later US patents
- Method of operating an engine assembly114US 10,590,867 B2Pratt & Whitney Canada Corp. · 2020
- Constant pressure heating vane rotary engine52US 3,989,011 A1976
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