F02B 19/02
The chamber being periodically isolated from its cylinder
Official title: the chamber being periodically isolated from its cylinder
F02B19/02 (The chamber being periodically isolated from its cylinder) appears on 176 US grants and 83 published applications in this corpus.
Search patents in F02B- Granted patents
- 176
- Published applications
- 83
- Assignees
- 74
- Inventors
- 239
- Latest grant
- 15 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 6 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 6 | 0 |
| 1990 | 1 | 0 |
| 1991 | 14 | 0 |
| 1992 | 5 | 0 |
| 1993 | 8 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 6 | 0 |
| 2001 | 4 | 1 |
| 2002 | 2 | 0 |
| 2003 | 4 | 4 |
| 2004 | 0 | 4 |
| 2005 | 5 | 7 |
| 2006 | 6 | 1 |
| 2007 | 0 | 3 |
| 2008 | 4 | 0 |
| 2009 | 1 | 3 |
| 2010 | 1 | 1 |
| 2011 | 0 | 3 |
| 2012 | 3 | 5 |
| 2013 | 1 | 1 |
| 2014 | 5 | 4 |
| 2015 | 2 | 5 |
| 2016 | 1 | 7 |
| 2017 | 6 | 6 |
| 2018 | 8 | 4 |
| 2019 | 2 | 3 |
| 2020 | 4 | 3 |
| 2021 | 6 | 6 |
| 2022 | 5 | 4 |
| 2023 | 2 | 3 |
| 2024 | 6 | 3 |
| 2025 | 4 | 2 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Extended-life prechamber sparkplug for engine system and engine system operating method15 Jul 2025US 12,359,609 B1Caterpillar Inc.
- Fastener-driving tool with multiple combustion chambers and usable with fuel canisters of varying lengths1 Jul 2025US 12,343,852 B2Illinois Tool Works Inc.
- Friction insert for oriented valve3 Jun 2025US 12,320,292 B2
- Engine having prechamber ignition and method of controlling such an engine7 Jan 2025US 12,188,399 B2Liebherr Machines Bulle SA
- Engine having prechamber ignition and method of controlling such an engine17 Sep 2024US 12,092,015 B2Liebherr Machines Bulle SA
- Air/steam engine and use thereof25 Dec 2025US 2025/0389237 A1
- Oriented valve ignition chamber30 Oct 2025US 2025/0334068 A1
- Friction insert for oriented valve18 Jul 2024US 2024/0240584 A1
- Engine having prechamber ignition and method of controlling such an engine20 Jun 2024US 2024/0200488 A1Liebherr Machines Bulle SA
- Fastener-driving tool with multiple combustion chambers and usable with fuel canisters of varying lengths30 May 2024US 2024/0173834 A1Illinois Tool Works Inc.
Most cited
By later US patents
- Internal combustion engine52US 5,560,326 ACoventry University · 1996
- Internal combustion engine for diverse fuels42US 4,372,264 A1983
- Variable-cycle engine42US 5,022,353 AIsuzu Ceramics Research Institute Co., Ltd. · 1991
- Internal combustion engines and method of operting an internal combustion engine using staged combustion35US 5,076,229 A1991
- Engine with pre-chamber34US 5,454,356 AIsuzu Ceramics Research Institute Co., Ltd. · 1995