F02B 75/044
By means of an adjustable piston length
Official title: {by means of an adjustable piston length}
F02B75/044 (By means of an adjustable piston length) appears on 105 US grants and 81 published applications in this corpus.
Search patents in F02B- Granted patents
- 105
- Published applications
- 81
- Assignees
- 47
- Inventors
- 174
- Latest grant
- 16 Jul 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 6 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 3 |
| 2005 | 1 | 2 |
| 2006 | 2 | 5 |
| 2007 | 3 | 3 |
| 2008 | 5 | 3 |
| 2009 | 3 | 3 |
| 2010 | 2 | 2 |
| 2011 | 1 | 5 |
| 2012 | 2 | 3 |
| 2013 | 4 | 2 |
| 2014 | 6 | 5 |
| 2015 | 3 | 6 |
| 2016 | 4 | 3 |
| 2017 | 3 | 6 |
| 2018 | 7 | 6 |
| 2019 | 10 | 8 |
| 2020 | 1 | 8 |
| 2021 | 10 | 4 |
| 2022 | 7 | 2 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Variable height pistons for optimizing combustion pressures in internal combustion engines16 Jul 2024US 12,037,937 B1
- Method for providing variable compression ratio in a combustion engine and device for the method13 Sep 2022US 11,441,493 B2Hedman Ericsson Patent AB
- 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
- Cranktrain phase adjuster for variable compression ratio26 Jul 2022US 11,396,843 B2Schaeffler Technologies AG & Co. KG
- Casella hydraulic variable compression ratio piston12 Jul 2022US 11,384,685 B1
- Cranktrain phase adjuster for variable compression ratio26 Jan 2023US 2023/0023207 A1Schaeffler Technologies AG & Co. KG
- Casella hydraulic variable compression ratio piston14 Jul 2022US 2022/0220886 A1
- Method for providing variable compression ratio in a combustion engine and device for the method10 Feb 2022US 2022/0042467 A1Hedman Ericsson Patent AB
- Cranktrain phase adjuster for variable compression ratio25 Nov 2021US 2021/0363917 A1Schaeffler Technologies AG & Co. KG
- 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
Most cited
By later US patents
- Controlled variable compression ratio piston for an internal combustion engine39US 4,469,055 A1984
- Temperature-sensitive variation of the compression ratio in pistons having variable compression height26US 4,979,427 ADaimler-Benz Aktiengesellschaft · 1990
- Variable compression piston arrangement for internal combustion engine25US 4,934,347 AAtsugi Motor Parts Company, Limited · 1990
- Variable compression ratio piston23US 5,178,103 AFord Motor Company · 1993
- Variable compression ratio piston22US 4,241,705 ATeledyne Industries, Inc. · 1980