F01N 3/2857
The mats or gaskets being at least partially made of intumescent material
Official title: {the mats or gaskets being at least partially made of intumescent material, e.g. unexpanded vermiculite}
F01N3/2857 (The mats or gaskets being at least partially made of intumescent material) appears on 220 US grants and 124 published applications in this corpus.
Search patents in F01N- Granted patents
- 220
- Published applications
- 124
- Assignees
- 80
- Inventors
- 304
- Latest grant
- 20 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 7 | 0 |
| 1992 | 10 | 0 |
| 1993 | 7 | 0 |
| 1994 | 9 | 0 |
| 1995 | 6 | 0 |
| 1996 | 6 | 0 |
| 1997 | 4 | 0 |
| 1998 | 10 | 0 |
| 1999 | 11 | 0 |
| 2000 | 7 | 0 |
| 2001 | 9 | 4 |
| 2002 | 7 | 13 |
| 2003 | 12 | 14 |
| 2004 | 5 | 13 |
| 2005 | 8 | 10 |
| 2006 | 5 | 4 |
| 2007 | 7 | 6 |
| 2008 | 5 | 5 |
| 2009 | 3 | 9 |
| 2010 | 7 | 5 |
| 2011 | 5 | 12 |
| 2012 | 8 | 9 |
| 2013 | 2 | 1 |
| 2014 | 7 | 7 |
| 2015 | 5 | 1 |
| 2016 | 3 | 3 |
| 2017 | 4 | 0 |
| 2018 | 3 | 0 |
| 2019 | 2 | 2 |
| 2020 | 1 | 2 |
| 2021 | 1 | 1 |
| 2022 | 0 | 3 |
| 2023 | 1 | 0 |
| 2024 | 3 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Mat material, method of making same, pollution control apparatus and thermal insulation20 May 2025US 12,305,560 B23M Innovative Properties Company
- Inorganic fiber-formed article, mat for exhaust gas cleaning apparatus, and exhaust gas cleaning apparatus17 Dec 2024US 12,168,841 B2Maftec Co., Ltd.
- Inorganic fiber-formed article, mat for exhaust gas cleaning apparatus, and exhaust gas cleaning apparatus8 Oct 2024US 12,110,622 B2Maftec Co., Ltd.
- Mounting member for wrapping and mounting a pollution control element30 Apr 2024US 11,969,709 B23M Innovative Properties Company
- Tubular member for exhaust gas treatment device and exhaust gas treatment device using the tubular member, and method of manufacturing tubular member for exhaust gas treatment device3 Oct 2023US 11,773,762 B2NGK Insulators, Ltd.
- Tubular member for exhaust gas treatment device and exhaust gas treatment device using the tubular member, and method of manufacturing tubular member for exhaust gas treatment device1 Sep 2022US 2022/0275744 A1NGK Insulators, Ltd.
- Inorganic Fiber-Formed Article, Mat for Exhaust Gas Cleaning Apparatus, and Exhaust Gas Cleaning Apparatus2 Jun 2022US 2022/0170404 A1Mitsubishi Chemical Corporation
- Inorganic fiber-formed article, mat for exhaust gas cleaning apparatus, and exhaust gas cleaning apparatus13 Jan 2022US 2022/0010470 A1Mitsubishi Chemical Corporation
- Mat material, method of making same, pollution control apparatus and thermal insulation12 Aug 2021US 2021/0246819 A13M Innovative Properties Company
- Double canning exhaust gas purification device19 Nov 2020US 2020/0362742 A1Faurecia Systemes D'Echappement
Most cited
By later US patents
- Catalytic converter having a metallic monolith mounted by a heat-insulating mat of refractory ceramic fibers154US 5,250,269 AMinnesota Mining and Manufacturing Company · 1993
- Catalytic converter for automotive exhaust system110US 4,617,176 AMinnesota Mining and Manufacturing Company · 1986
- Catalytic converter107US 4,929,429 AMinnesota Mining and Manufacturing Company · 1990
- Intumescent sheet material103US 4,305,992 AMinnesota Mining and Manufacturing Company · 1981
- Multilayer intumescent sheet93US 6,051,193 A3M Innovative Properties Company · 2000