F02B 75/021
Having six or more strokes per cycle
Official title: {having six or more strokes per cycle}
F02B75/021 (Having six or more strokes per cycle) appears on 98 US grants and 92 published applications in this corpus.
Search patents in F02B- Granted patents
- 98
- Published applications
- 92
- Assignees
- 32
- Inventors
- 160
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 1 |
| 2002 | 3 | 4 |
| 2003 | 4 | 3 |
| 2004 | 4 | 5 |
| 2005 | 2 | 2 |
| 2006 | 3 | 1 |
| 2007 | 0 | 6 |
| 2008 | 3 | 1 |
| 2009 | 4 | 5 |
| 2010 | 5 | 15 |
| 2011 | 5 | 4 |
| 2012 | 5 | 2 |
| 2013 | 1 | 1 |
| 2014 | 3 | 14 |
| 2015 | 11 | 3 |
| 2016 | 4 | 7 |
| 2017 | 1 | 6 |
| 2018 | 6 | 1 |
| 2019 | 2 | 3 |
| 2020 | 1 | 0 |
| 2021 | 3 | 3 |
| 2022 | 4 | 1 |
| 2023 | 1 | 0 |
| 2024 | 1 | 2 |
| 2025 | 1 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fuel reforming system28 Jul 2026US 12,692,828 B2Mazda Motor Corporation
- Systems and methods for extra-stroke engine cycle operation5 Aug 2025US 12,378,910 B1Caterpillar Inc.
- Method for a combustion machine with two times three strokes22 Oct 2024US 12,123,342 B2Dr. Ing. h,c.F. Porsche Aktiengesellschaft
- Camshaft for internal-combustion engine29 Aug 2023US 11,739,685 B2
- Method for operating an internal combustion engine6 Dec 2022US 11,519,328 B2Volvo Truck Corporation
- Fuel reforming system21 Aug 2025US 2025/0264076 A1Mazda Motor Corporation
- Fuel reforming system for vehicle21 Aug 2025US 2025/0264077 A1Mazda Motor Corporation
- Internal cooling method for engines and engine in which it is applied26 Sep 2024US 2024/0318607 A1
- Method for a combustion machine with two times three strokes12 Sep 2024US 2024/0301817 A1Dr. Ing. h,c.F. Porsche Aktiengesellschaft
- Camshaft for internal-combustion engine17 Mar 2022US 2022/0082048 A1
Most cited
By later US patents
- 6-cycle engine with regenerator168US 8,186,334 B22012
- Internal combustion engine having solenoid-operated valves and control method97US 6,332,446 B1Toyota Jidosha Kabushiki Kaisha · 2001
- Split-cycle air hybrid engine74US 7,353,786 B2Scuderi Group, LLC · 2008
- Split-cycle air hybrid engine56US 7,603,970 B2Scuderi Group, LLC · 2009
- Multiple-stroke, spark-ignited engine51US 6,443,108 B1Ford Global Technologies, LLC · 2002