F02D 41/1493
Details
Official title: {Details}
F02D41/1493 (Details) appears on 1,113 US grants and 829 published applications in this corpus.
Search patents in F02D- Granted patents
- 1,113
- Published applications
- 829
- Assignees
- 168
- Inventors
- 1,807
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 8 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 8 | 0 |
| 1988 | 14 | 0 |
| 1989 | 11 | 0 |
| 1990 | 15 | 0 |
| 1991 | 14 | 0 |
| 1992 | 14 | 0 |
| 1993 | 24 | 0 |
| 1994 | 26 | 0 |
| 1995 | 24 | 0 |
| 1996 | 21 | 0 |
| 1997 | 23 | 0 |
| 1998 | 34 | 0 |
| 1999 | 25 | 0 |
| 2000 | 22 | 0 |
| 2001 | 18 | 9 |
| 2002 | 27 | 22 |
| 2003 | 23 | 41 |
| 2004 | 31 | 33 |
| 2005 | 32 | 28 |
| 2006 | 25 | 25 |
| 2007 | 24 | 35 |
| 2008 | 15 | 29 |
| 2009 | 35 | 43 |
| 2010 | 26 | 44 |
| 2011 | 26 | 40 |
| 2012 | 33 | 36 |
| 2013 | 35 | 50 |
| 2014 | 40 | 42 |
| 2015 | 48 | 50 |
| 2016 | 45 | 55 |
| 2017 | 43 | 48 |
| 2018 | 60 | 49 |
| 2019 | 55 | 37 |
| 2020 | 46 | 32 |
| 2021 | 43 | 25 |
| 2022 | 23 | 8 |
| 2023 | 9 | 12 |
| 2024 | 12 | 17 |
| 2025 | 19 | 7 |
| 2026 | 3 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System and method for adaptive control of ammonia-NOx ratio28 Jul 2026US 12,692,810 B2Caterpillar Inc.
- Cold start control systems and methods24 Mar 2026US 12,583,437 B2GM Global Technology Operations LLC
- Oxygen sensor heater control for hybrid vehicle3 Mar 2026US 12,565,864 B2Fca US LLC
- Method, system and computer program product for performing an on-board diagnostic function in a motor vehicle23 Dec 2025US 12,503,126 B2Dr. Ing. h,c.F. Porsche Aktiengesellschaft
- Whole vehicle fault detection using centrally located gas analysis2 Dec 2025US 12,487,151 B2TORC Robotics, Inc.
- Methods and systems for controlling an engine following a fuel cut-off event17 Sep 2026US 2026/0275929 A1Ford Global Technologies, LLC
- Method for operating a drive device for a motor vehicle and corresponding drive device27 Aug 2026US 2026/0251101 A1Audi AG
- System and method for adaptive control of ammonia-nox ratio18 Jun 2026US 2026/0168418 A1Caterpillar Inc.
- Methods and systems for diagnosing four oxygen sensor system18 Jun 2026US 2026/0168456 A1Ford Global Technologies, LLC
- Engine catalyst diagnosis apparatus11 Jun 2026US 2026/0160194 A1Mazda Motor Corporation
Most cited
By later US patents
- Apparatus and method for diagnosing degradation or malfunction of oxygen sensor108US 5,781,878 ANippondenso Co., Ltd. · 1998
- Engine and emission monitoring and control system utilizing gas sensors96US 5,426,934 AHitachi America, Ltd. · 1995
- Air-fuel ratio control system for internal combustion engines81US 5,724,808 AHonda Giken Kogyo Kabushiki Kaisha · 1998
- Method for air-fuel ratio sensor diagnosis63US 6,736,121 B2Ford Global Technologies, LLC · 2004
- Combustible-gas sensor, diagnostic device for intake-oxygen concentration sensor, and air-fuel ratio control device for internal combustion engines63US 6,739,177 B2Nippon Soken, Inc. · 2004