F02B 75/041
By means of cylinder or cylinderhead positioning
Official title: {by means of cylinder or cylinderhead positioning}
F02B75/041 (By means of cylinder or cylinderhead positioning) appears on 148 US grants and 135 published applications in this corpus.
Search patents in F02B- Granted patents
- 148
- Published applications
- 135
- Assignees
- 37
- Inventors
- 167
- Latest grant
- 21 Mar 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 5 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 2 |
| 2004 | 4 | 7 |
| 2005 | 3 | 4 |
| 2006 | 4 | 2 |
| 2007 | 0 | 4 |
| 2008 | 3 | 8 |
| 2009 | 3 | 11 |
| 2010 | 6 | 9 |
| 2011 | 4 | 7 |
| 2012 | 9 | 16 |
| 2013 | 5 | 5 |
| 2014 | 16 | 7 |
| 2015 | 6 | 10 |
| 2016 | 14 | 8 |
| 2017 | 6 | 9 |
| 2018 | 7 | 10 |
| 2019 | 8 | 8 |
| 2020 | 9 | 2 |
| 2021 | 7 | 5 |
| 2022 | 4 | 0 |
| 2023 | 2 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Systems and methods of compression ignition engines21 Mar 2023US 11,608,773 B2Nautilus Engineering, LLC
- Engine and ignition assembly with two pistons7 Feb 2023US 11,572,826 B1
- System and method for control of compression in internal combustion engine via compression ratio and elastic piston30 Aug 2022US 11,428,174 B2Lawrence Livermore National Security, LLC
- Top dead center gauge set7 Jun 2022US 11,352,949 B2
- 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 engine18 Nov 2021US 2021/0355888 A1Hedman Ericsson Patent AB
- System and method for control of compression in internal combustion engine via compression ratio and elastic piston19 Aug 2021US 2021/0254563 A1Lawrence Livermore National Security, LLC
- Top Dead Center Gauge Set29 Jul 2021US 2021/0231049 A1
- Systems and methods of compression ignition engines8 Jul 2021US 2021/0207524 A1Nautilus Engineering, LLC
- Variable-compression-ratio internal combustion engine14 Jan 2021US 2021/0010416 A1Nissan Motor Co., Ltd.
Most cited
By later US patents
- Reciprocating piston engine with a varying compression ratio45US 5,025,757 A1991
- High efficiency variable expansion ratio engine42US 4,174,683 A1979
- 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