F01N 1/14
Silencing apparatus characterised by method of silencing: by adding air to exhaust
Official title: by adding air to exhaust gases {(in tailpipes F01N13/082, F01N13/20)}
F01N1/14 (Silencing apparatus characterised by method of silencing: by adding air to exhaust) appears on 76 US grants and 59 published applications in this corpus.
Search patents in F01N- Granted patents
- 76
- Published applications
- 59
- Assignees
- 60
- Inventors
- 182
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 0 |
| 2003 | 1 | 3 |
| 2004 | 3 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 4 |
| 2009 | 0 | 2 |
| 2010 | 2 | 6 |
| 2011 | 3 | 5 |
| 2012 | 4 | 1 |
| 2013 | 3 | 1 |
| 2014 | 1 | 0 |
| 2015 | 1 | 3 |
| 2016 | 4 | 4 |
| 2017 | 1 | 1 |
| 2018 | 1 | 2 |
| 2019 | 2 | 0 |
| 2020 | 3 | 3 |
| 2021 | 1 | 4 |
| 2022 | 3 | 2 |
| 2023 | 5 | 8 |
| 2024 | 5 | 3 |
| 2025 | 4 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Aftertreatment heat up strategies21 Oct 2025US 12,448,908 B2Eaton Intelligent Power Limited
- Vehicle with gasoline particulate filter soot regeneration strategy with criteria emission reduction for low NOX emissions19 Aug 2025US 12,392,300 B1GM Global Technology Operations LLC
- Internal combustion engine for a motor vehicle, in particular for a motor car1 Jul 2025US 12,345,187 B2Mercedes-Benz Group AG
- Aircraft provided with an engine and an exhaust duct around an exhaust nozzle of the engine10 Jun 2025US 12,325,527 B2Airbus Helicopters
- Method for controlling powertrain of hybrid vehicle15 Oct 2024US 12,115,969 B2Hyundai Motor Company
- Dual Venturi Exhaust Assembly20 Aug 2026US 2026/0243189 A1
- Secondary Air Valve for a Secondary Air System of an Internal Combustion Engine, Internal Combustion Engine and Motor Vehicle30 Jul 2026US 2026/0218643 A1Mercedes-Benz Group AG
- Aftertreatment heat up strategies13 Feb 2025US 2025/0052180 A1Eaton Intelligent Power Limited
- Aircraft provided with an engine and an exhaust duct around an exhaust nozzle of the engine13 Jun 2024US 2024/0190576 A1Airbus Helicopters
- Method for operating an exhaust burner, apparatus for performing such a method, and motor vehicle4 Jan 2024US 2024/0003278 A1Robert Bosch GmbH
Most cited
By later US patents
- Combination spark arrestor and aspirating muffler129US 4,147,230 ANelson Industries, Inc. · 1979
- Electric connector for endoscope, endoscope, and method for assembling electric connector108US 8,075,477 B2Olympus Corporation · 2011
- Engine exhaust control system and method59US 4,912,927 A1990
- Method and apparatus for reducing oxides of nitrogen in the exhaust gas of an internal combustion engine40US 6,352,068 B1Honda Giken Kogyo Kabushiki Kaisha · 2002
- Exhaust muffler38US 6,220,387 B12001