F01N 11/007
The diagnostic devices measuring oxygen or air concentration downstream of the exhaust
Official title: {the diagnostic devices measuring oxygen or air concentration downstream of the exhaust apparatus}
F01N11/007 (The diagnostic devices measuring oxygen or air concentration downstream of the exhaust) appears on 1,237 US grants and 1,030 published applications in this corpus.
Search patents in F01N- Granted patents
- 1,237
- Published applications
- 1,030
- Assignees
- 225
- Inventors
- 2,145
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 18 | 0 |
| 1993 | 19 | 0 |
| 1994 | 33 | 0 |
| 1995 | 32 | 0 |
| 1996 | 22 | 0 |
| 1997 | 24 | 0 |
| 1998 | 45 | 0 |
| 1999 | 40 | 0 |
| 2000 | 26 | 0 |
| 2001 | 21 | 11 |
| 2002 | 28 | 32 |
| 2003 | 33 | 40 |
| 2004 | 31 | 47 |
| 2005 | 37 | 26 |
| 2006 | 33 | 25 |
| 2007 | 22 | 50 |
| 2008 | 15 | 29 |
| 2009 | 22 | 34 |
| 2010 | 27 | 22 |
| 2011 | 35 | 19 |
| 2012 | 22 | 26 |
| 2013 | 19 | 30 |
| 2014 | 34 | 45 |
| 2015 | 29 | 49 |
| 2016 | 41 | 69 |
| 2017 | 73 | 97 |
| 2018 | 65 | 69 |
| 2019 | 76 | 75 |
| 2020 | 78 | 74 |
| 2021 | 69 | 48 |
| 2022 | 65 | 23 |
| 2023 | 27 | 29 |
| 2024 | 28 | 27 |
| 2025 | 26 | 14 |
| 2026 | 11 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method, processing unit, and computer program for ascertaining fill levels of a first exhaust gas catalytic converter and of a second exhaust gas catalytic converter6 Oct 2026US 12,753,716 B2Robert Bosch GmbH
- Estimation method for determining the oxygen storage capacity of a catalytic converter22 Sep 2026US 12,742,408 B2Ferrari S.P. A.
- Internal combustion engine system15 Sep 2026US 12,736,016 B2Toyota Jidosha Kabushiki Kaisha
- System and method for adaptive control of air-to-fuel ratio18 Aug 2026US 12,710,014 B2Caterpillar Inc.
- System and method for adaptive control of ammonia-NOx ratio28 Jul 2026US 12,692,810 B2Caterpillar Inc.
- System and method for monitoring a burner associated with an exhaust gas after-treatment apparatus of a vehicle1 Oct 2026US 2026/0298126 A1Ferrari S.P. A.
- Compression ignition engine and system utilizing ammonia as a fuel source24 Sep 2026US 2026/0286881 A1Analytical Engineering, Inc.
- Aftertreatment system nox and ammonia control strategy13 Aug 2026US 2026/0235059 A1Cummins Inc.
- Feeding and exhaust system for internal combustion engine, or thermal unit, and respective method of operation13 Aug 2026US 2026/0235064 A1Rhapis S.R.L.
- Exhaust monitoring apparatus6 Aug 2026US 2026/0226858 A1Toyota Jidosha Kabushiki Kaisha
Most cited
By later US patents
- System comprising duel-fuel and after treatment for heavy-heavy duty diesel (HHDD) engines180US 10,287,943 B1Clean Power Technologies, LLC · 2019
- Method for controlling the level of oxygen stored by a catalyst within a catalytic converter152US 5,842,340 AMotorola, Inc. · 1998
- Method and apparatus for monitoring and adjusting .lambda.-probe-controlled catalytic exhaust gas emission control systems of internal combustion engines114US 4,622,809 ADaimler-Benz Aktiengesellschaft · 1986
- Method and apparatus for monitoring the activity of catalytic reactors112US 3,969,932 ARobert Bosch GmbH · 1976
- Method for monitoring the performance of a NO.sub.x trap110US 5,771,685 AFord Global Technologies, LLC · 1998