F02B 33/30
Control of inlet or outlet ports
F02B33/30 (Control of inlet or outlet ports) appears on 154 US grants and 63 published applications in this corpus.
Search patents in F02B- Granted patents
- 154
- Published applications
- 63
- Assignees
- 58
- Inventors
- 218
- Latest grant
- 7 May 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 6 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 5 | 0 |
| 1986 | 7 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 10 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 10 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 6 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 1 |
| 2002 | 4 | 8 |
| 2003 | 7 | 3 |
| 2004 | 4 | 5 |
| 2005 | 4 | 1 |
| 2006 | 2 | 2 |
| 2007 | 1 | 2 |
| 2008 | 2 | 2 |
| 2009 | 0 | 0 |
| 2010 | 0 | 3 |
| 2011 | 1 | 1 |
| 2012 | 0 | 2 |
| 2013 | 2 | 3 |
| 2014 | 1 | 4 |
| 2015 | 4 | 3 |
| 2016 | 5 | 3 |
| 2017 | 1 | 2 |
| 2018 | 2 | 5 |
| 2019 | 1 | 4 |
| 2020 | 8 | 2 |
| 2021 | 4 | 4 |
| 2022 | 3 | 0 |
| 2023 | 3 | 3 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Two-stroke engine and method for operating a two-stroke engine7 May 2024US 11,976,587 B2Andreas Stihl AG & CO.KG
- Two-stroke engine and method for operating a two-stroke engine3 Oct 2023US 11,773,767 B2Andreas Stihl AG & CO.KG
- Modified cycle two-stroke engine11 Jul 2023US 11,698,022 B1Cyclazoom, LLC
- Engine crank with air channels6 Jun 2023US 11,668,229 B1
- Split cycle internal combustion engine27 Dec 2022US 11,536,190 B2Dolphin N2 Limited
- Two-stroke engine and method for operating a two-stroke engine14 Dec 2023US 2023/0399974 A1Andreas Stihl AG & CO.KG
- Gas exchange in internal combustion engines for increased efficiency29 Jun 2023US 2023/0203981 A1
- T-scavenged opposed piston engine9 Feb 2023US 2023/0044154 A1Pinnacle Engines, Inc.
- Split Cycle Internal Combustion Engine18 Nov 2021US 2021/0355861 A1Dolphin N2 Limited
- Internal Combustion Engine18 Nov 2021US 2021/0355892 A1Coutts Industries Inc.
Most cited
By later US patents
- Internal combustion engine60US 4,565,167 A1986
- Two cycle internal combustion engines58US 4,075,985 AYamaha Hatsudoki Kabushiki Kaisha · 1978
- Power module and methods of operation50US 6,415,749 B12002
- Abnormality warning system for a direct fuel injection engine41US 5,241,933 AFuji Jukogyo Kabushiki Kaisha · 1993
- Two cycle engine32US 4,541,371 ASuzuki Motor Corporation · 1985