F01N 3/0217
The filtering elements having the form of hollow cylindrical bodies
Official title: {the filtering elements having the form of hollow cylindrical bodies}
F01N3/0217 (The filtering elements having the form of hollow cylindrical bodies) appears on 100 US grants and 55 published applications in this corpus.
Search patents in F01N- Granted patents
- 100
- Published applications
- 55
- Assignees
- 76
- Inventors
- 218
- Latest grant
- 28 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 6 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 5 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 1 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 4 |
| 2003 | 2 | 3 |
| 2004 | 5 | 4 |
| 2005 | 3 | 7 |
| 2006 | 4 | 5 |
| 2007 | 5 | 0 |
| 2008 | 2 | 1 |
| 2009 | 2 | 0 |
| 2010 | 0 | 2 |
| 2011 | 3 | 2 |
| 2012 | 1 | 5 |
| 2013 | 1 | 1 |
| 2014 | 0 | 2 |
| 2015 | 4 | 1 |
| 2016 | 1 | 3 |
| 2017 | 2 | 2 |
| 2018 | 2 | 0 |
| 2019 | 1 | 3 |
| 2020 | 1 | 2 |
| 2021 | 3 | 3 |
| 2022 | 2 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Exhaust aftertreatment system (EATS)28 Jan 2025US 12,209,522 B2Volvo Truck Corporation
- Catalytically active particulate filter18 Jul 2023US 11,702,971 B2Umicore AG & Co. KG
- Filter arrangement13 Dec 2022US 11,525,378 B2Mahle International GmbH
- Tailpipe apparatus to capture greenhouse gas emissions18 Oct 2022US 11,473,463 B1
- Systems and methods for controlling flow distribution in an aftertreatment system28 Dec 2021US 11,208,927 B2Cummins Emission Solutions Inc.
- Feeding and exhaust system for internal combustion engine, or thermal unit, and respective method of operation13 Aug 2026US 2026/0235064 A1Rhapis S.R.L.
- Exhaust aftertreatment system with filter cartridge assembly14 May 2026US 2026/0132728 A1Cummins Emission Solutions Inc.
- Exhaust gas treatment device and small combustion installation equipped therewith27 Feb 2025US 2025/0065267 A1Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Exhaust aftertreatment system (eats)30 Nov 2023US 2023/0383683 A1Volvo Truck Corporation
- Filter arrangement19 Aug 2021US 2021/0254523 A1Mahle International GmbH
Most cited
By later US patents
- High temperature nanofilter, system and method99US 7,052,532 B13M Innovative Properties Company · 2006
- Pollution arrestor68US 5,536,477 AChang Yul Cha · 1996
- Carbon particulates cleaning device for diesel engine58US 4,535,588 ANippon Soken, Inc. · 1985
- Regenerable diesel exhaust filter and heater53US 5,457,945 APall Corporation · 1995
- Regenerable filter for exhaust gases of an internal-combustion engine51US 5,207,807 AIveco Fiat S.p.A. · 1993