F02D 41/3023
A mode being the stratified charge spark-ignited mode
Official title: {a mode being the stratified charge spark-ignited mode}
F02D41/3023 (A mode being the stratified charge spark-ignited mode) appears on 831 US grants and 531 published applications in this corpus.
Search patents in F02D- Granted patents
- 831
- Published applications
- 531
- Assignees
- 122
- Inventors
- 1,174
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 10 | 0 |
| 1993 | 10 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 7 | 0 |
| 1998 | 23 | 0 |
| 1999 | 56 | 0 |
| 2000 | 55 | 0 |
| 2001 | 81 | 26 |
| 2002 | 72 | 45 |
| 2003 | 69 | 51 |
| 2004 | 44 | 35 |
| 2005 | 33 | 29 |
| 2006 | 36 | 44 |
| 2007 | 33 | 30 |
| 2008 | 28 | 22 |
| 2009 | 13 | 31 |
| 2010 | 20 | 12 |
| 2011 | 20 | 13 |
| 2012 | 8 | 18 |
| 2013 | 10 | 13 |
| 2014 | 15 | 15 |
| 2015 | 14 | 11 |
| 2016 | 15 | 34 |
| 2017 | 26 | 20 |
| 2018 | 28 | 23 |
| 2019 | 24 | 15 |
| 2020 | 14 | 16 |
| 2021 | 20 | 15 |
| 2022 | 10 | 4 |
| 2023 | 3 | 4 |
| 2024 | 3 | 2 |
| 2025 | 0 | 1 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Split cycle engine2 Jun 2026US 12,644,406 B2Fpt Industrial S.P.A.
- 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 engine19 Nov 2024US 12,146,450 B2Toyota Jidosha Kabushiki Kaisha
- Engine system17 Sep 2024US 12,092,046 B2Toyota Jidosha Kabushiki Kaisha
- Split cycle engine3 Sep 2024US 12,078,096 B2Dolphin N2 Limited
- System and method of fuel injection mode transitions for an internal combustion engine during cylinder activation and deactivation20 Aug 2026US 2026/0243214 A1GM Global Technology Operations LLC
- Internal combustion engine11 Jun 2026US 2026/0160216 A1Toyota Jidosha Kabushiki Kaisha
- Stratified nitrogen enriched air (nea) strategies and methods to reduce nox emissions from engines31 Jul 2025US 2025/0243799 A1Saudi Arabian Oil Company
- Split Cycle Engine17 Oct 2024US 2024/0344478 A1Dolphin N2 Limited
- Engine system13 Jun 2024US 2024/0191666 A1Toyota Jidosha Kabushiki Kaisha
Most cited
By later US patents
- Differential torque operation for internal combustion engine167US 7,503,312 B2Ford Global Technologies, LLC · 2009
- Premixed charge compression ignition engine with optimal combustion control152US 6,230,683 B1Cummins Engine Company, Inc. · 2001
- Premixed charge compression ignition engine with optimal combustion control139US 6,286,482 B1Cummins Engine Company, Inc. · 2001
- Compression autoignition gasoline engine114US 6,336,436 B12002
- Vapor recovery control system for direct injection spark ignition engines110US 5,950,603 AFord Global Technologies, LLC · 1999