F01N 3/0835
Hydrocarbons
Official title: {Hydrocarbons}
F01N3/0835 (Hydrocarbons) appears on 455 US grants and 335 published applications in this corpus.
Search patents in F01N- Granted patents
- 455
- Published applications
- 335
- Assignees
- 136
- Inventors
- 912
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 8 | 0 |
| 1995 | 8 | 0 |
| 1996 | 20 | 0 |
| 1997 | 24 | 0 |
| 1998 | 20 | 0 |
| 1999 | 23 | 0 |
| 2000 | 15 | 0 |
| 2001 | 22 | 11 |
| 2002 | 26 | 28 |
| 2003 | 21 | 31 |
| 2004 | 25 | 16 |
| 2005 | 19 | 9 |
| 2006 | 8 | 10 |
| 2007 | 8 | 12 |
| 2008 | 6 | 8 |
| 2009 | 1 | 11 |
| 2010 | 11 | 12 |
| 2011 | 8 | 10 |
| 2012 | 13 | 10 |
| 2013 | 8 | 16 |
| 2014 | 12 | 9 |
| 2015 | 13 | 12 |
| 2016 | 3 | 7 |
| 2017 | 11 | 15 |
| 2018 | 15 | 12 |
| 2019 | 8 | 20 |
| 2020 | 16 | 19 |
| 2021 | 22 | 21 |
| 2022 | 12 | 8 |
| 2023 | 14 | 14 |
| 2024 | 10 | 8 |
| 2025 | 8 | 5 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Exhaust-gas treatment arrangement14 Jul 2026US 12,680,485 B2Purem GmbH
- Exhaust gas purification catalyst device7 Apr 2026US 12,594,525 B2Cataler Corporation
- Evaporative fuel vapor emission control systems17 Mar 2026US 12,577,895 B2Ingevity South Carolina, LLC
- Active hydrocarbon trap for reduction of emissions from internal combustion engines using a four valve configuration25 Nov 2025US 12,480,433 B2Saudi Arabian Oil Company
- Active hydrocarbon trap for reduction of emissions from internal combustion engines using a three-valve configuration7 Oct 2025US 12,435,655 B2Saudi Arabian Oil Company
- Active hydrocarbon trap for reduction of emissions from internal combustion engines using a two-valve configuration15 Jan 2026US 2026/0015962 A1Saudi Arabian Oil Company
- Hydrocarbon trap, exhaust purification device and hybrid vehicle18 Sep 2025US 2025/0288938 A1Honda Motor Co., Ltd.
- Active hydrocarbon trap for reduction of emissions from internal combustion engines using a four valve configuration26 Jun 2025US 2025/0207522 A1Aramco Services Company
- Active hydrocarbon trap for reduction of emissions from internal combustion engines using a three-valve configuration26 Jun 2025US 2025/0207523 A1Aramco Services Company
- Active hydrocarbon trap for reduction of emissions from internal combustion engines using a two-valve configuration26 Jun 2025US 2025/0207525 A1Aramco Services Company
Most cited
By later US patents
- Method and apparatus for treating an engine exhaust gas stream154US 6,171,556 B2Engelhard Corporation · 2001
- Exhaust gas purification system for low emission vehicle147US 6,167,696 AFord Motor Company · 2001
- Dual converter engine exhaust system for reducing hydrocarbon emissions137US 5,125,231 ACorning Incorporated · 1992
- System for exhaust gas purification and method for exhaust gas purification using said system109US 5,884,473 ANGK Insulators, Ltd. · 1999
- Exhaust emission control device for a diesel engine106US 4,934,142 AToyota Jidosha Kabushiki Kaisha · 1990