F01N 2570/14
Nitrogen oxides
F01N2570/14 (Nitrogen oxides) appears on 1,009 US grants and 1,111 published applications in this corpus.
Search patents in F01N- Granted patents
- 1,009
- Published applications
- 1,111
- Assignees
- 378
- Inventors
- 2,437
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 9 | 0 |
| 1996 | 6 | 0 |
| 1997 | 12 | 0 |
| 1998 | 17 | 0 |
| 1999 | 12 | 0 |
| 2000 | 14 | 0 |
| 2001 | 23 | 10 |
| 2002 | 19 | 32 |
| 2003 | 24 | 50 |
| 2004 | 31 | 52 |
| 2005 | 35 | 63 |
| 2006 | 38 | 39 |
| 2007 | 36 | 27 |
| 2008 | 13 | 34 |
| 2009 | 23 | 47 |
| 2010 | 30 | 64 |
| 2011 | 26 | 40 |
| 2012 | 41 | 20 |
| 2013 | 38 | 14 |
| 2014 | 26 | 20 |
| 2015 | 18 | 38 |
| 2016 | 35 | 63 |
| 2017 | 51 | 89 |
| 2018 | 38 | 86 |
| 2019 | 97 | 75 |
| 2020 | 68 | 41 |
| 2021 | 53 | 52 |
| 2022 | 47 | 69 |
| 2023 | 47 | 35 |
| 2024 | 37 | 25 |
| 2025 | 27 | 18 |
| 2026 | 11 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Exhaust gas purification catalyst6 Oct 2026US 12,752,237 B2Cataler Corporation
- Three-way conversion catalyst composition comprising platinum-rhodium bimetallic components11 Aug 2026US 12,702,968 B2BASF Mobile Emissions Catalysts LLC
- Purification system21 Jul 2026US 12,687,123 B2Isuzu Motors Limited
- Reducing agent supply device, method for controlling reducing agent supply device, and control device14 Jul 2026US 12,680,487 B2Komatsu Ltd.
- Systems and methods for controlling tailpipe exhaust emissions14 Jul 2026US 12,680,490 B2Cummins Inc.
- Systems and methods for controlling tailpipe exhaust emissions1 Oct 2026US 2026/0298125 A1Cummins Inc.
- Exhaust Gas Purification Catalyst23 Jul 2026US 2026/0208107 A1Cataler Corporation
- Aftertreatment system, dual fuel system, and methods therefor30 Apr 2026US 2026/0117688 A1Cummins Power Generation Inc.
- Catalyst for Exhaust Gas Purification9 Apr 2026US 2026/0097363 A1Cataler Corporation
- Systems and methods for doser bias detection in aftertreatment systems9 Apr 2026US 2026/0098491 A1Cummins Emission Solutions Inc.
Most cited
By later US patents
- 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
- Engine with cylinder deactivation168US 6,023,929 AFord Global Technologies, LLC · 2000
- Combustion exhaust purification system and method146US 5,522,218 ACaterpillar Inc. · 1996
- Method for purifying exhaust gas of a diesel engine146US 5,746,989 AToyota Jidosha Kabushiki Kaisha · 1998
- Reducing NO.sub.x emissions from an engine by temperature-controlled urea injection for selective catalytic reduction120US 5,976,475 AClean Diesel Technologies, Inc. · 1999