F01N 3/01
Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise
Official title: by means of electric or electrostatic separators
F01N3/01 (Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise) appears on 198 US grants and 165 published applications in this corpus.
Search patents in F01N- Granted patents
- 198
- Published applications
- 165
- Assignees
- 118
- Inventors
- 389
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 6 | 0 |
| 1991 | 6 | 0 |
| 1992 | 6 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 8 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 5 | 0 |
| 1999 | 6 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 1 |
| 2002 | 3 | 2 |
| 2003 | 6 | 5 |
| 2004 | 1 | 6 |
| 2005 | 5 | 7 |
| 2006 | 8 | 8 |
| 2007 | 4 | 6 |
| 2008 | 3 | 3 |
| 2009 | 3 | 6 |
| 2010 | 2 | 3 |
| 2011 | 4 | 4 |
| 2012 | 4 | 10 |
| 2013 | 3 | 10 |
| 2014 | 7 | 9 |
| 2015 | 9 | 2 |
| 2016 | 10 | 6 |
| 2017 | 2 | 3 |
| 2018 | 5 | 5 |
| 2019 | 5 | 6 |
| 2020 | 4 | 9 |
| 2021 | 7 | 23 |
| 2022 | 4 | 20 |
| 2023 | 4 | 6 |
| 2024 | 2 | 1 |
| 2025 | 5 | 3 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electrostatic precipitator and control method thereof8 Sep 2026US 12,728,424 B2Samsung Electronics Co., Ltd.
- Exhaust system and features thereof21 Apr 2026US 12,607,140 B2ECC TEC MSJ Incorporated
- Catalytic converter24 Feb 2026US 12,560,114 B2ECC TEC MSJ Incorporated
- Modular plasma reformer treatment system25 Nov 2025US RE50,672 E1Rimere, LLC
- Modular plasma reformer treatment system2 Sep 2025US RE50,565 E1Rimere, LLC
- Exhaust system and features thereof27 Aug 2026US 2026/0251080 A1ECC TEC MSJ Incorporated
- Dinitrogen oxide purification system, internal combustion engine system, and dinitrogen oxide purification method25 Sep 2025US 2025/0297565 A1Yanmar Holdings Co., Ltd.
- Exhaust gas treatment device and small combustion installation equipped therewith27 Feb 2025US 2025/0065267 A1Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Device for treating exhaust gases from a vehicle and a method to operate the same30 Jan 2025US 2025/0035022 A1Iniciotek Private Limited
- Apparatus and method for electron irradiation scrubbing26 Sep 2024US 2024/0316494 A1Daphne Technology SA
Most cited
By later US patents
- Apparatus for removing soot and NOx in exhaust gas from diesel engines89US 6,772,584 B22004
- Barrier discharge conversion of Hg, SO.sub.2 and NOx79US 6,117,403 AZero Emissions Technology Inc. · 2000
- Barrier discharge conversion of SO.sub.2 and NOx to acids78US 6,132,692 APowerspan Corp. · 2000
- Apparatus and method for destructive removal of particles contained in flowing fluid77US 4,376,637 ACalifornia Institute of Technology · 1983
- Multi-purpose ceramic element69US 4,251,239 A1981