F01N 3/0293
Injecting substances in exhaust stream
Official title: {injecting substances in exhaust stream}
F01N3/0293 (Injecting substances in exhaust stream) appears on 91 US grants and 99 published applications in this corpus.
Search patents in F01N- Granted patents
- 91
- Published applications
- 99
- Assignees
- 60
- Inventors
- 247
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 2 | 2 |
| 2006 | 1 | 2 |
| 2007 | 0 | 0 |
| 2008 | 1 | 2 |
| 2009 | 0 | 1 |
| 2010 | 1 | 4 |
| 2011 | 1 | 2 |
| 2012 | 2 | 1 |
| 2013 | 1 | 2 |
| 2014 | 4 | 1 |
| 2015 | 2 | 4 |
| 2016 | 1 | 3 |
| 2017 | 2 | 2 |
| 2018 | 2 | 8 |
| 2019 | 5 | 16 |
| 2020 | 8 | 12 |
| 2021 | 13 | 10 |
| 2022 | 11 | 7 |
| 2023 | 14 | 10 |
| 2024 | 6 | 6 |
| 2025 | 1 | 2 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Display driving device comprising an emission circuit and positive feedback circuit22 Sep 2026US 12,742,407 B2Purem GmbH
- Treatment of particulate filters28 Jul 2026US 12,692,807 B2Johnson Matthey Public Limited Company
- Control method for reductant generation device, exhaust purification method, reductant generation system, and exhaust purification system28 Jan 2025US 12,209,523 B2NGK Insulators, Ltd.
- Mixer assembly3 Dec 2024US 12,158,096 B2Tenneco Inc.
- Exhaust gas system unit12 Nov 2024US 12,140,061 B1Tenneco Inc.
- Ignited reducing compositions and methods for catalytically decomposing exhaust gas mixtures9 Oct 2025US 2025/0314185 A1Altered Labs LLC
- Mixer Assembly20 Feb 2025US 2025/0059903 A1Tenneco Inc.
- Exhaust gas system unit14 Nov 2024US 2024/0376840 A1Tenneco Inc.
- Explosion Safe Electrolysis Unit19 Sep 2024US 2024/0309801 A1HyTech Power, LLC
- Ultra Low Enhancement Gas Injection12 Sep 2024US 2024/0301815 A1HyTech Power, LLC
Most cited
By later US patents
- Exhaust gas cleaning system for vehicle39US 4,665,690 AMazda Motor Corporation · 1987
- Method of removing soot from exhaust gases26US 4,516,990 AFilterwerk Mann & Hummel GmbH · 1985
- Diesel particulate traps25US 4,813,233 AOntario Research Foundation · 1989
- Temperature control for HHO injection gas24US 10,494,992 B2HyTech Power, LLC · 2019
- Method and device for removing soot from exhaust gases23US 4,436,535 AFilterwerk Mann & Hummel GmbH · 1984