F02
Combustion engines
Official title: Combustion engines; hot-gas or combustion-product engine plants
F02 (Combustion engines) appears on 145,860 US grants and 110,678 published applications in this corpus.
Search patents in F02- Granted patents
- 145,860
- Published applications
- 110,678
- Assignees
- 14,245
- Inventors
- 146,785
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1608 | 0 |
| 1977 | 1447 | 0 |
| 1978 | 1638 | 0 |
| 1979 | 1257 | 0 |
| 1980 | 1566 | 0 |
| 1981 | 1642 | 0 |
| 1982 | 1544 | 0 |
| 1983 | 1771 | 0 |
| 1984 | 2160 | 0 |
| 1985 | 2104 | 0 |
| 1986 | 1620 | 0 |
| 1987 | 1964 | 0 |
| 1988 | 1901 | 0 |
| 1989 | 2094 | 0 |
| 1990 | 2123 | 0 |
| 1991 | 2217 | 0 |
| 1992 | 2250 | 0 |
| 1993 | 2129 | 0 |
| 1994 | 1895 | 0 |
| 1995 | 1939 | 0 |
| 1996 | 2033 | 0 |
| 1997 | 1985 | 0 |
| 1998 | 2396 | 0 |
| 1999 | 2311 | 0 |
| 2000 | 2607 | 0 |
| 2001 | 3141 | 969 |
| 2002 | 3158 | 2938 |
| 2003 | 3231 | 3462 |
| 2004 | 3203 | 3762 |
| 2005 | 2987 | 3664 |
| 2006 | 3139 | 3556 |
| 2007 | 2658 | 3692 |
| 2008 | 2405 | 3900 |
| 2009 | 2278 | 4550 |
| 2010 | 2817 | 4571 |
| 2011 | 2805 | 4205 |
| 2012 | 3219 | 4247 |
| 2013 | 3611 | 5264 |
| 2014 | 3897 | 5604 |
| 2015 | 4305 | 6126 |
| 2016 | 4619 | 6718 |
| 2017 | 5327 | 6392 |
| 2018 | 5806 | 6449 |
| 2019 | 6417 | 5644 |
| 2020 | 6179 | 5719 |
| 2021 | 5353 | 4365 |
| 2022 | 4902 | 3790 |
| 2023 | 3942 | 3381 |
| 2024 | 3621 | 2935 |
| 2025 | 2938 | 2644 |
| 2026 | 1701 | 2131 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subclasses
Granted patents
- F02DControlling combustion engines45,793
- F02MSupplying combustion engines in general with combustible mixtures or constituents thereof42,670
- F02BInternal-combustion piston engines42,567
- F02CGas-turbine plants26,386
- F02KJet-propulsion plants10,704
- F02PIgnition, other than compression ignition, for internal-combustion engines9,631
- F02FCylinders, pistons or casings, for combustion engines9,016
- F02NStarting of combustion engines7,550
All 9 subclassesShow fewer
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