F01N 2330/36
With flow channels formed by tubes
Official title: with flow channels formed by tubes
F01N2330/36 (With flow channels formed by tubes) appears on 21 US grants and 20 published applications in this corpus.
Search patents in F01N- Granted patents
- 21
- Published applications
- 20
- Assignees
- 16
- Inventors
- 48
- Latest grant
- 9 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 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 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 2 |
| 2011 | 1 | 0 |
| 2012 | 1 | 1 |
| 2013 | 1 | 2 |
| 2014 | 0 | 5 |
| 2015 | 4 | 3 |
| 2016 | 0 | 0 |
| 2017 | 2 | 0 |
| 2018 | 1 | 0 |
| 2019 | 2 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Exhaust gas system for an internal combustion engine9 Dec 2025US 12,492,657 B2Purem GmbH
- Exhaust gas purification catalyst body20 Apr 2021US 10,981,113 B2Cataler Corporation
- Emissions control substrate3 Dec 2019US 10,494,970 B2Denso Corporation
- Catalytic composition and system for exhaust purification5 Mar 2019US 10,220,376 B1
- Catalytic converter apparatus27 Mar 2018US 9,926,824 B2Vida Fresh Air Corp.
- Exhaust gas system for an internal combustion engine26 Dec 2024US 2024/0426233 A1Purem GmbH
- Exhaust gas purification catalyst body4 Mar 2021US 2021/0060487 A1Cataler Corporation
- Emissions control substrate10 Jan 2019US 2019/0010842 A1Denso Corporation
- Catalytic converter apparatus26 Nov 2015US 2015/0337711 A1Vida Holdings Ltd.
- Catalytic Converter Substrate4 Jun 2015US 2015/0151290 A1Imperial Innovations Limited
Most cited
By later US patents
- Catalyst arrangement with flow guide body29US 5,103,641 AEmitec Gesellschaft fur Emissionstechnologie mbH · 1992
- Exhaust muffler for internal combustion engines27US 8,439,159 B12013
- Catalyst arrangement with flow guide body20US 5,150,573 AEMITEC Gesellschaft fuer Emissionstechnologie mbH · 1992
- Electrically heated particulate filter zone-based post fuel injection system20US 8,051,644 B2GM Global Technology Operations LLC · 2011
- Catalytic converter apparatus15US 8,309,032 B2Vida Holdings Ltd. · 2012