F01N 2530/26
Multi-layered walls
F01N2530/26 (Multi-layered walls) appears on 67 US grants and 49 published applications in this corpus.
Search patents in F01N- Granted patents
- 67
- Published applications
- 49
- Assignees
- 67
- Inventors
- 204
- Latest grant
- 29 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 1 |
| 2002 | 0 | 2 |
| 2003 | 2 | 3 |
| 2004 | 2 | 2 |
| 2005 | 1 | 4 |
| 2006 | 0 | 3 |
| 2007 | 3 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 2 |
| 2010 | 2 | 5 |
| 2011 | 1 | 7 |
| 2012 | 3 | 1 |
| 2013 | 2 | 1 |
| 2014 | 1 | 2 |
| 2015 | 2 | 1 |
| 2016 | 3 | 1 |
| 2017 | 1 | 2 |
| 2018 | 0 | 3 |
| 2019 | 3 | 0 |
| 2020 | 1 | 6 |
| 2021 | 1 | 0 |
| 2022 | 2 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Interconnection system of a urea-based reducing agent injector to an after-treatment an exhaust gas device29 Apr 2025US 12,286,914 B2Fpt Industrial S.P.A.
- Exhaust gas system for an internal combustion engine2 Jul 2024US 12,025,045 B2Purem GmbH
- Diffusion surface alloyed metal exhaust component with inwardly turned edges8 Mar 2022US 11,268,429 B2Tenneco Automotive Operating Company Inc.
- Diffusion surface alloyed metal exhaust component with welded edges8 Mar 2022US 11,268,430 B2Tenneco Automotive Operating Company Inc.
- Pipe structure15 Jun 2021US 11,035,284 B2Toyota Jidosha Kabushiki Kaisha
- Interconnection system of a urea-based reducing agent injector to an after-treatment an exhaust gas device23 Jan 2025US 2025/0027438 A1Fpt Industrial S.P.A.
- Exhaust gas system for an internal combustion engine23 Feb 2023US 2023/0057647 A1Purem GmbH
- Composite structure, vehicle and method of manufacturing a composite structure3 Dec 2020US 2020/0378295 A1Faurecia Emissions Control Technologies, Germany GmbH
- Diffusion Surface Alloyed Metal Exhaust Component23 Jul 2020US 2020/0232376 A1Tenneco Automotive Operating Company Inc.
- Diffusion Surface Alloyed Metal Exhaust Component With Inwardly Turned Edges23 Jul 2020US 2020/0232377 A1Tenneco Automotive Operating Company Inc.
Most cited
By later US patents
- Muffler for internal combustion engines80US 4,589,516 AHonda Giken Kogyo Kabushiki Kaisha · 1986
- Engine exhaust catalysts containing palladium-gold53US 8,258,070 B2WGCH Technology Limited · 2012
- Sound-deadened motor vehicle exhaust manifold38US 5,530,213 AFord Motor Company · 1996
- Heat-resistant exhaust manifold and method of preparing same35US 5,018,661 A1991
- Exhaust manifold of internal combustion engine32US 4,884,400 ANissan Motor Co., Ltd. · 1989