F02B 17/00
Engines characterised by means for effecting stratification of charge in cylinders
F02B17/00 (Engines characterised by means for effecting stratification of charge in cylinders) appears on 775 US grants and 535 published applications in this corpus.
Search patents in F02B- Granted patents
- 775
- Published applications
- 535
- Assignees
- 204
- Inventors
- 1,275
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 20 | 0 |
| 1978 | 14 | 0 |
| 1979 | 6 | 0 |
| 1980 | 6 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 6 | 0 |
| 1984 | 11 | 0 |
| 1985 | 9 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 11 | 0 |
| 1989 | 10 | 0 |
| 1990 | 4 | 0 |
| 1991 | 7 | 0 |
| 1992 | 7 | 0 |
| 1993 | 6 | 0 |
| 1994 | 8 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 7 | 0 |
| 1998 | 15 | 0 |
| 1999 | 27 | 0 |
| 2000 | 33 | 0 |
| 2001 | 36 | 21 |
| 2002 | 37 | 45 |
| 2003 | 58 | 25 |
| 2004 | 34 | 28 |
| 2005 | 19 | 22 |
| 2006 | 30 | 32 |
| 2007 | 19 | 31 |
| 2008 | 30 | 30 |
| 2009 | 7 | 24 |
| 2010 | 27 | 23 |
| 2011 | 14 | 12 |
| 2012 | 13 | 14 |
| 2013 | 13 | 32 |
| 2014 | 19 | 39 |
| 2015 | 23 | 32 |
| 2016 | 31 | 16 |
| 2017 | 19 | 23 |
| 2018 | 22 | 22 |
| 2019 | 21 | 21 |
| 2020 | 19 | 12 |
| 2021 | 18 | 9 |
| 2022 | 5 | 9 |
| 2023 | 8 | 3 |
| 2024 | 5 | 6 |
| 2025 | 1 | 1 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Stratified nitrogen enriched air (NEA) strategies and methods to reduce NOx emissions from engines12 May 2026US 12,624,654 B2Saudi Arabian Oil Company
- Internal combustion engine with spark plug and prechamber spark plug12 Aug 2025US 12,385,446 B2Robert Bosch GmbH
- Fuel injection system and method22 Oct 2024US 12,123,383 B2Volvo Construction Equipment AB
- Internal combustion engine with spark plug and prechamber spark plug10 Sep 2024US 12,085,009 B2Robert Bosch GmbH
- Hydrogen or hydrogen rich gas mixture fueled internal combustion engine using premixed direct gas injection13 Aug 2024US 12,060,824 B1Saudi Arabian Oil Company
- Engine braking in a split-cycle engine17 Sep 2026US 2026/0275902 A1Fpt Industrial S.P.A.
- Turbulent jet controlled diffusion combustion engine23 Jul 2026US 2026/0210283 A1Aramco Services Company
- Piston for reciprocating within a cylinder in an internal combustion engine18 Jun 2026US 2026/0168460 A1Cummins Inc.
- Stratified nitrogen enriched air (nea) strategies and methods to reduce nox emissions from engines31 Jul 2025US 2025/0243799 A1Saudi Arabian Oil Company
- Split cycle internal combustion engine and methods of operating a split cycle internal combustion engine7 Nov 2024US 2024/0369012 A1
Most cited
By later US patents
- Multimedia optical disc storing both video titles provided with AV functions and video titles with no such functions which can instantly distinguish between such kinds of titles, and a reproduction apparatus and reproduction method for such disc191US 5,771,334 AMatsushita Electric Industrial Co., Ltd. · 1998
- Multiple operating mode engine and method of operation134US 6,561,157 B2Cummins Inc. · 2003
- Optimized fuel management system for direct injection ethanol enhancement of gasoline engines129US 7,225,787 B2Massachusetts Institute of Technology · 2007
- Fuel supply apparatus for an internal combustion engine128US 6,711,893 B2ExxonMobil Research and Engineering Company · 2004
- Plasma jet ignition engine and method122US 4,203,393 AFord Motor Company · 1980