F01N 2370/22
Used in non-catalytic purification apparatus
Official title: used in non-catalytic purification apparatus
F01N2370/22 (Used in non-catalytic purification apparatus) appears on 142 US grants and 108 published applications in this corpus.
Search patents in F01N- Granted patents
- 142
- Published applications
- 108
- Assignees
- 79
- Inventors
- 342
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 7 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 6 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 5 |
| 2003 | 0 | 6 |
| 2004 | 5 | 4 |
| 2005 | 3 | 4 |
| 2006 | 4 | 5 |
| 2007 | 2 | 3 |
| 2008 | 0 | 5 |
| 2009 | 5 | 3 |
| 2010 | 4 | 3 |
| 2011 | 3 | 1 |
| 2012 | 2 | 2 |
| 2013 | 3 | 3 |
| 2014 | 2 | 0 |
| 2015 | 1 | 2 |
| 2016 | 2 | 1 |
| 2017 | 2 | 0 |
| 2018 | 0 | 4 |
| 2019 | 0 | 2 |
| 2020 | 2 | 5 |
| 2021 | 6 | 9 |
| 2022 | 4 | 12 |
| 2023 | 12 | 13 |
| 2024 | 6 | 9 |
| 2025 | 8 | 5 |
| 2026 | 5 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Exhaust system and features thereof21 Apr 2026US 12,607,140 B2ECC TEC MSJ Incorporated
- Honeycomb filter24 Feb 2026US 12,558,641 B2NGK Insulators, Ltd.
- Catalytic converter24 Feb 2026US 12,560,114 B2ECC TEC MSJ Incorporated
- Method for manufacturing gasoline particulate filter10 Feb 2026US 12,544,739 B2Johnson Matthey Public Limited Company
- Honeycomb structure and exhaust gas purifying device13 Jan 2026US 12,521,705 B2NGK Insulators, Ltd.
- Exhaust system and features thereof27 Aug 2026US 2026/0251080 A1ECC TEC MSJ Incorporated
- Zeolite catalysts with paired heteroatoms and methods thereof14 May 2026US 2026/0131318 A1BASF SE
- Honeycomb filter4 Dec 2025US 2025/0369376 A1NGK Insulators, Ltd.
- Systems and methods for measuring exhaust gas species and catalyst nox storage for catalyst-related controls and diagnostics25 Sep 2025US 2025/0297564 A1Cummins Inc.
- System and method for mobile carbon capture24 Jul 2025US 2025/0237162 A1Echeneidae Inc.
Most cited
By later US patents
- Method and apparatus for treating an engine exhaust gas stream154US 6,171,556 B2Engelhard Corporation · 2001
- Dual converter engine exhaust system for reducing hydrocarbon emissions137US 5,125,231 ACorning Incorporated · 1992
- Exhaust emission control device for a diesel engine106US 4,934,142 AToyota Jidosha Kabushiki Kaisha · 1990
- Catalytic wall-flow filter103US 6,753,294 B1Johnson Matthey Public Limited Company · 2004
- Filter and means for regeneration thereof89US 5,087,272 A1992