F01N 2490/18
Dimensional characteristics of gas chambers
F01N2490/18 (Dimensional characteristics of gas chambers) appears on 52 US grants and 52 published applications in this corpus.
Search patents in F01N- Granted patents
- 52
- Published applications
- 52
- Assignees
- 38
- Inventors
- 155
- Latest grant
- 12 Aug 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 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 3 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 2 | 2 |
| 2009 | 1 | 1 |
| 2010 | 2 | 1 |
| 2011 | 0 | 4 |
| 2012 | 5 | 4 |
| 2013 | 1 | 1 |
| 2014 | 2 | 1 |
| 2015 | 2 | 5 |
| 2016 | 3 | 2 |
| 2017 | 1 | 2 |
| 2018 | 2 | 1 |
| 2019 | 1 | 7 |
| 2020 | 4 | 1 |
| 2021 | 1 | 3 |
| 2022 | 6 | 4 |
| 2023 | 5 | 1 |
| 2024 | 3 | 3 |
| 2025 | 2 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Exhaust handling systems for marine vessels and related methods12 Aug 2025US 12,384,508 B2Marathon Petroleum Company LP
- Annular catalytic converter21 Jan 2025US 12,201,941 B2Vitesco Technologies GmbH
- Exhaust gas cooling device17 Sep 2024US 12,092,009 B2Tenneco Inc.
- Exhaust device and method of manufacturing thereof27 Aug 2024US 12,071,875 B2Tenneco Automotive Operating Company Inc.
- Exhaust handling systems for marine vessels and related methods23 Jul 2024US 12,043,361 B1Marathon Petroleum Company LP
- Exhaust handling systems for marine vessels and related methods27 Nov 2025US 2025/0360999 A1Marathon Petroleum Company LP
- Exhaust device17 Apr 2025US 2025/0122819 A1Kawasaki Motors, Ltd.
- Exhaust handling systems for marine vessels and related methods29 Aug 2024US 2024/0286726 A1Marathon Petroleum Company LP
- Exhaust gas cooling device22 Feb 2024US 2024/0060437 A1Tenneco Inc.
- Acoustic impedance change structure and air passage type silencer4 Jan 2024US 2024/0003275 A1FUJIFILM Corporation
Most cited
By later US patents
- Muffler for internal combustion engine84US 5,304,749 A1994
- Exhaust manifold26US 5,572,868 AAisin Takaoka Co., Ltd. · 1996
- Exhaust handling systems for marine vessels and related methods19US 12,043,361 B1Marathon Petroleum Company LP · 2024
- Vacuum pump exhaust muffler19US 4,263,981 AAllied Chemical Corporation · 1981
- Catalytic converter end plate inlet/outlet plenum length ratio19US 6,497,847 B2Delphi Technologies, Inc. · 2002