F02D 9/04
Concerning exhaust conduits
Official title: concerning exhaust conduits (throttle valves, or arrangements thereof in conduits F02D9/08)
F02D9/04 (Concerning exhaust conduits) appears on 789 US grants and 669 published applications in this corpus.
Search patents in F02D- Granted patents
- 789
- Published applications
- 669
- Assignees
- 280
- Inventors
- 1,576
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 6 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 5 | 0 |
| 1984 | 0 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 7 | 0 |
| 1988 | 6 | 0 |
| 1989 | 19 | 0 |
| 1990 | 9 | 0 |
| 1991 | 6 | 0 |
| 1992 | 6 | 0 |
| 1993 | 6 | 0 |
| 1994 | 7 | 0 |
| 1995 | 6 | 0 |
| 1996 | 3 | 0 |
| 1997 | 9 | 0 |
| 1998 | 12 | 0 |
| 1999 | 13 | 0 |
| 2000 | 23 | 0 |
| 2001 | 27 | 10 |
| 2002 | 21 | 18 |
| 2003 | 24 | 21 |
| 2004 | 18 | 16 |
| 2005 | 17 | 24 |
| 2006 | 14 | 23 |
| 2007 | 13 | 24 |
| 2008 | 20 | 27 |
| 2009 | 12 | 57 |
| 2010 | 21 | 41 |
| 2011 | 31 | 34 |
| 2012 | 33 | 19 |
| 2013 | 30 | 32 |
| 2014 | 23 | 24 |
| 2015 | 27 | 24 |
| 2016 | 23 | 32 |
| 2017 | 31 | 33 |
| 2018 | 30 | 30 |
| 2019 | 26 | 28 |
| 2020 | 31 | 42 |
| 2021 | 43 | 36 |
| 2022 | 39 | 28 |
| 2023 | 26 | 15 |
| 2024 | 18 | 11 |
| 2025 | 17 | 13 |
| 2026 | 5 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Exhaust vane braking strategy for gasoline engine with variable geometry turbine29 Sep 2026US 12,747,688 B1Fca US LLC
- Engine system25 Aug 2026US 12,716,395 B2Volvo Truck Corporation
- Engine braking mode selection systems and methods16 Jun 2026US 12,655,806 B2Cummins Inc.
- Computer system and a computer-implemented method of controlling the temperature of a selective catalytic reduction system12 May 2026US 12,623,659 B2Volvo Truck Corporation
- Accelerator device5 May 2026US 12,617,272 B2Denso Corporation
- Systems and methods for prognostics for health prediction of air handling valve-actuator with position sensing10 Sep 2026US 2026/0266229 A1Cummins Inc.
- Exhaust gas purification device, exhaust gas purification method, and control device20 Aug 2026US 2026/0243204 A1Komatsu Ltd.
- Method for controlling a motor brake of an internal combustion engine23 Jul 2026US 2026/0210304 A1ZF Friedrichshafen AG
- Systems and methods of engine braking using high pressure fuel pump14 May 2026US 2026/0132754 A1
- Engine control system and methods19 Mar 2026US 2026/0078710 A1Arctic Cat Inc.
Most cited
By later US patents
- Premixed charge compression ignition engine with optimal combustion control196US 6,276,334 B1Cummins Engine Company, Inc. · 2001
- Multiple operating mode engine and method of operation134US 6,561,157 B2Cummins Inc. · 2003
- Apparatus and method for emissions containment and reduction118US 6,164,063 A2000
- Exhaust gas re-circulation arrangement111US 6,216,459 B1DaimlerChrysler AG · 2001
- Method and apparatus for operating a diesel engine109US 5,771,686 AMercedes-Benz AG · 1998