F01N 11/00
Monitoring or diagnostic devices for exhaust-gas treatment apparatus
F01N11/00 (Monitoring or diagnostic devices for exhaust-gas treatment apparatus) appears on 3,848 US grants and 3,827 published applications in this corpus.
Search patents in F01N- Granted patents
- 3,848
- Published applications
- 3,827
- Assignees
- 591
- Inventors
- 6,071
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 26 | 0 |
| 1993 | 33 | 0 |
| 1994 | 43 | 0 |
| 1995 | 53 | 0 |
| 1996 | 39 | 0 |
| 1997 | 41 | 0 |
| 1998 | 71 | 0 |
| 1999 | 66 | 0 |
| 2000 | 45 | 0 |
| 2001 | 42 | 18 |
| 2002 | 64 | 53 |
| 2003 | 55 | 77 |
| 2004 | 63 | 102 |
| 2005 | 73 | 94 |
| 2006 | 77 | 96 |
| 2007 | 72 | 166 |
| 2008 | 58 | 140 |
| 2009 | 79 | 153 |
| 2010 | 100 | 146 |
| 2011 | 126 | 141 |
| 2012 | 155 | 159 |
| 2013 | 124 | 183 |
| 2014 | 170 | 191 |
| 2015 | 182 | 237 |
| 2016 | 180 | 211 |
| 2017 | 224 | 289 |
| 2018 | 216 | 257 |
| 2019 | 289 | 254 |
| 2020 | 242 | 249 |
| 2021 | 243 | 173 |
| 2022 | 206 | 118 |
| 2023 | 114 | 102 |
| 2024 | 117 | 94 |
| 2025 | 96 | 63 |
| 2026 | 34 | 61 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Apparatus for diagnosing a post-processing system6 Oct 2026US 12,753,715 B2AVL Software and Functions GmbH
- 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
- Gas sensor29 Sep 2026US 12,748,070 B2NGK Insulators, Ltd.
- 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
- Ultra-low nox diesel engine generator with selective catalytic reduction engineered exhaust system and method1 Oct 2026US 2026/0298124 A1Industrial Service Solutions WC, 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.
- Multiple heater exhaust aftertreatment system architecture and methods of control thereof24 Sep 2026US 2026/0286875 A1Cummins Inc.
- Compression ignition engine and system utilizing ammonia as a fuel source24 Sep 2026US 2026/0286881 A1Analytical Engineering, Inc.
- System and method for controlled heat exchanger swapping17 Sep 2026US 2026/0275893 A1Innio Waukesha Gas Engines Inc.
Most cited
By later US patents
- Radio frequency process sensing, control, and diagnostics network and system267US 10,118,119 B2CTS Corporation · 2018
- System comprising duel-fuel and after treatment for heavy-heavy duty diesel (HHDD) engines180US 10,287,943 B1Clean Power Technologies, LLC · 2019
- Reducing no.sub.x emissions from an engine by temperature-controlled urea injection for selective catalytic reduction171US 6,063,350 AClean Diesel Technologies, Inc. · 2000
- Method and apparatus for controlled introduction of a reducing agent into a nitrogen oxide-containing exhaust gas153US 5,628,186 ASiemens Aktiengesellschaft · 1997
- Method for controlling the level of oxygen stored by a catalyst within a catalytic converter152US 5,842,340 AMotorola, Inc. · 1998