F02B 75/042
The cylinderhead comprising a counter-piston
Official title: {the cylinderhead comprising a counter-piston}
F02B75/042 (The cylinderhead comprising a counter-piston) appears on 65 US grants and 56 published applications in this corpus.
Search patents in F02B- Granted patents
- 65
- Published applications
- 56
- Assignees
- 24
- Inventors
- 77
- Latest grant
- 21 Mar 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 2 |
| 2004 | 4 | 4 |
| 2005 | 0 | 1 |
| 2006 | 2 | 1 |
| 2007 | 0 | 3 |
| 2008 | 2 | 1 |
| 2009 | 1 | 3 |
| 2010 | 0 | 1 |
| 2011 | 1 | 2 |
| 2012 | 2 | 5 |
| 2013 | 3 | 2 |
| 2014 | 2 | 3 |
| 2015 | 1 | 5 |
| 2016 | 8 | 6 |
| 2017 | 3 | 5 |
| 2018 | 5 | 2 |
| 2019 | 3 | 5 |
| 2020 | 7 | 2 |
| 2021 | 4 | 2 |
| 2022 | 2 | 0 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Systems and methods of compression ignition engines21 Mar 2023US 11,608,773 B2Nautilus Engineering, LLC
- Four stroke relative motion cylinder with dedicated compression space15 Feb 2022US 11,248,521 B1
- Method and device for increased exhaust gas temperature in a diesel engine8 Feb 2022US 11,242,810 B2Hedman Ericsson Patent AB
- Direct torque control, piston engine5 Oct 2021US 11,136,916 B1
- Piston engine cylinder head with combined functions28 Sep 2021US 11,131,255 B1
- Method and device for increased exhaust gas temperature in a diesel engine18 Nov 2021US 2021/0355888 A1Hedman Ericsson Patent AB
- Systems and methods of compression ignition engines8 Jul 2021US 2021/0207524 A1Nautilus Engineering, LLC
- Variable compression ratio engine11 Jun 2020US 2020/0182146 A1Hyundai Motor Company
- Power delivery devices for reciprocating engines and related systems and methods5 Mar 2020US 2020/0072327 A1Enfield Engine Company, LLC
- Power Delivery Devices for Reciprocating Engines, Pumps, and Compressors, and Related Systems and Methods28 Nov 2019US 2019/0360560 A1Enfield Engine Company, LLC
Most cited
By later US patents
- Variable compression engine40US 4,104,995 A1978
- Variable compression ratio systems for opposed-piston and other internal combustion engines, and related methods of manufacture and use40US 8,413,619 B2Pinnacle Engines, Inc. · 2013
- Variable compression and asymmetrical stroke internal combustion engine36US 6,230,671 B12001
- Fuel tolerant combustion engine with reduced knock sensitivity31US 5,476,072 A1995
- Internal combustion engine with variable compression ratio23US 6,427,643 B12002