F02B 27/04
In exhaust systems only
Official title: in exhaust systems only, e.g. for sucking-off combustion gases
F02B27/04 (In exhaust systems only) appears on 244 US grants and 135 published applications in this corpus.
Search patents in F02B- Granted patents
- 244
- Published applications
- 135
- Assignees
- 91
- Inventors
- 442
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 5 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 7 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 6 | 0 |
| 1989 | 14 | 0 |
| 1990 | 11 | 0 |
| 1991 | 12 | 0 |
| 1992 | 9 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 6 | 0 |
| 1998 | 5 | 0 |
| 1999 | 6 | 0 |
| 2000 | 6 | 0 |
| 2001 | 8 | 3 |
| 2002 | 9 | 5 |
| 2003 | 4 | 15 |
| 2004 | 14 | 11 |
| 2005 | 11 | 12 |
| 2006 | 4 | 3 |
| 2007 | 4 | 10 |
| 2008 | 6 | 4 |
| 2009 | 3 | 5 |
| 2010 | 2 | 7 |
| 2011 | 4 | 3 |
| 2012 | 9 | 8 |
| 2013 | 3 | 11 |
| 2014 | 3 | 6 |
| 2015 | 8 | 4 |
| 2016 | 3 | 4 |
| 2017 | 4 | 3 |
| 2018 | 2 | 4 |
| 2019 | 3 | 2 |
| 2020 | 3 | 2 |
| 2021 | 3 | 7 |
| 2022 | 2 | 1 |
| 2023 | 2 | 0 |
| 2024 | 3 | 0 |
| 2025 | 2 | 2 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fluidic turbo heater system10 Feb 2026US 12,546,273 B2Jetoptera, Inc.
- Exhaust system for an engine2 Dec 2025US 12,485,997 B2Bombardier Recreational Products Inc.
- Variable exhaust control system11 Nov 2025US 12,467,399 B2
- Exhaust system for an engine10 Dec 2024US 12,162,562 B2Bombardier Recreational Preoducts Inc.
- Fluidic turbo heater system23 Apr 2024US 11,965,456 B2Jetoptera, Inc.
- Fluidic turbo heater system21 May 2026US 2026/0139639 A1Jetoptera, Inc.
- Turbocharger assembly9 Apr 2026US 2026/0097827 A1Bombardier Recreational Products Inc.
- Vehicle and method of supplying a fuel-air mixture in an engine5 Mar 2026US 2026/0062095 A1Bombardier Recreational Products Inc.
- Fluidic turbo heater system6 Feb 2025US 2025/0043713 A1Jetoptera, Inc.
- Exhaust system for an engine23 Jan 2025US 2025/0026445 A1Bombardier Recreational Products Inc.
Most cited
By later US patents
- Adjustable (D)-port insert header for internal combustion engines91US 4,302,935 A1981
- Muffler with catalytic converter arrangement; and method53US 5,355,973 ADonaldson Company, Inc. · 1994
- Exhaust apparatus for internal combustion engine51US 4,050,539 A1977
- Power control valve attachment for two cycle motorcycle type engine exhaust systems44US 3,969,895 A1976
- Header assembly for internal combustion engine and method40US 5,216,883 AFlowmaster, Inc. · 1993