F01N 9/005
Electrical control of exhaust gas treating apparatus: using models instead of sensors
Official title: {using models instead of sensors to determine operating characteristics of exhaust systems, e.g. calculating catalyst temperature instead of measuring it directly}
F01N9/005 (Electrical control of exhaust gas treating apparatus: using models instead of sensors) appears on 526 US grants and 544 published applications in this corpus.
Search patents in F01N- Granted patents
- 526
- Published applications
- 544
- Assignees
- 172
- Inventors
- 1,191
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 12 | 0 |
| 1998 | 11 | 0 |
| 1999 | 9 | 0 |
| 2000 | 4 | 0 |
| 2001 | 9 | 4 |
| 2002 | 9 | 10 |
| 2003 | 13 | 19 |
| 2004 | 10 | 20 |
| 2005 | 17 | 26 |
| 2006 | 22 | 18 |
| 2007 | 18 | 25 |
| 2008 | 8 | 18 |
| 2009 | 17 | 16 |
| 2010 | 13 | 20 |
| 2011 | 16 | 11 |
| 2012 | 13 | 15 |
| 2013 | 15 | 19 |
| 2014 | 13 | 17 |
| 2015 | 17 | 35 |
| 2016 | 19 | 25 |
| 2017 | 24 | 28 |
| 2018 | 20 | 31 |
| 2019 | 33 | 33 |
| 2020 | 27 | 37 |
| 2021 | 39 | 22 |
| 2022 | 29 | 21 |
| 2023 | 27 | 28 |
| 2024 | 28 | 25 |
| 2025 | 22 | 11 |
| 2026 | 6 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Apparatus and method for internal combustion engine control173US 5,657,625 AMitsubishi Jidosha Kogyo Kabushiki Kaisha · 1997
- Exhaust purification device of internal combustion engine131US 5,437,153 AToyota Jidosha Kabushiki Kaisha · 1995
- Control system for mobile NOx SCR applications125US 6,415,602 B1Engelhard Corporation · 2002
- NOx emission-control system using a virtual sensor122US 6,882,929 B2Caterpillar Inc. · 2005
- Method for determining catalyst cool down temperature106US 6,742,330 B2Engelhard Corporation · 2004