F02B 55/14
Shapes or constructions of combustion chambers
F02B55/14 (Shapes or constructions of combustion chambers) appears on 182 US grants and 157 published applications in this corpus.
Search patents in F02B- Granted patents
- 182
- Published applications
- 157
- Assignees
- 56
- Inventors
- 242
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 6 | 0 |
| 1978 | 11 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 2 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 4 |
| 2009 | 2 | 1 |
| 2010 | 0 | 2 |
| 2011 | 3 | 5 |
| 2012 | 2 | 2 |
| 2013 | 8 | 7 |
| 2014 | 4 | 10 |
| 2015 | 6 | 11 |
| 2016 | 6 | 11 |
| 2017 | 6 | 15 |
| 2018 | 15 | 14 |
| 2019 | 11 | 8 |
| 2020 | 9 | 14 |
| 2021 | 13 | 9 |
| 2022 | 12 | 14 |
| 2023 | 13 | 9 |
| 2024 | 13 | 4 |
| 2025 | 4 | 9 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Thermodynamic rotary engine53US 4,553,513 A1985
- Constant pressure heating vane rotary engine52US 3,989,011 A1976
- Rotary energy converter with respiring chambers40US 4,106,472 A1978
- Precombustion chamber rotary piston diesel engine38US 3,957,021 ACurtiss-Wright Corporation · 1976
- Rotary engine with variable displacement35US 5,168,846 A1992