F01N 2310/04
Metallic wool
Official title: Metallic wool, e.g. steel wool, copper wool or the like
F01N2310/04 (Metallic wool) appears on 61 US grants and 42 published applications in this corpus.
Search patents in F01N- Granted patents
- 61
- Published applications
- 42
- Assignees
- 55
- Inventors
- 133
- Latest grant
- 28 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 5 |
| 2003 | 4 | 2 |
| 2004 | 1 | 1 |
| 2005 | 2 | 4 |
| 2006 | 1 | 3 |
| 2007 | 1 | 4 |
| 2008 | 4 | 1 |
| 2009 | 0 | 7 |
| 2010 | 3 | 0 |
| 2011 | 2 | 0 |
| 2012 | 2 | 0 |
| 2013 | 1 | 2 |
| 2014 | 2 | 2 |
| 2015 | 0 | 0 |
| 2016 | 0 | 2 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 2 |
| 2022 | 3 | 4 |
| 2023 | 2 | 0 |
| 2024 | 3 | 1 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Exhaust gas assembly28 Oct 2025US 12,454,902 B2The University of Adelaide
- Inorganic fiber-formed article, mat for exhaust gas cleaning apparatus, and exhaust gas cleaning apparatus17 Dec 2024US 12,168,841 B2Maftec Co., Ltd.
- Exhaust gas assembly15 Oct 2024US 12,116,913 B2The University of Adelaide
- Inorganic fiber-formed article, mat for exhaust gas cleaning apparatus, and exhaust gas cleaning apparatus8 Oct 2024US 12,110,622 B2Maftec Co., Ltd.
- Shielding element19 Sep 2023US 11,761,367 B2ElringKlinger AG
- Exhaust gas assembly2 Jan 2025US 2025/0003359 A1The University of Adelaide
- Exhaust muffler for internal combustion engines11 Jul 2024US 2024/0229693 A1
- Shielding element13 Oct 2022US 2022/0325653 A1ElringKlinger AG
- Inorganic Fiber-Formed Article, Mat for Exhaust Gas Cleaning Apparatus, and Exhaust Gas Cleaning Apparatus2 Jun 2022US 2022/0170404 A1Mitsubishi Chemical Corporation
- An exhaust gas assembly10 Feb 2022US 2022/0042431 A1The University of Adelaide
Most cited
By later US patents
- Vehicle exhaust system118US 7,766,123 B2Yamaha Hatsudoki Kabushiki Kaisha · 2010
- Muffler49US 4,132,286 ANihon Radiator Co., Ltd. · 1979
- Low backpressure straight-through reactive and dissipative muffler46US 5,365,025 ATennessee Gas Pipeline Company · 1994
- Muffler for internal combustion engines, especially in aviation of improved geometry and material38US 5,902,970 A1999
- Process for the manufacture of an exhaust silencer34US 5,036,585 AGrunzweig & Hartmann AG · 1991