F02M 7/23
Fuel aerating devices
F02M7/23 (Fuel aerating devices) appears on 237 US grants and 35 published applications in this corpus.
Search patents in F02M- Granted patents
- 237
- Published applications
- 35
- Assignees
- 74
- Inventors
- 350
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 8 | 0 |
| 1978 | 23 | 0 |
| 1979 | 16 | 0 |
| 1980 | 15 | 0 |
| 1981 | 21 | 0 |
| 1982 | 22 | 0 |
| 1983 | 23 | 0 |
| 1984 | 24 | 0 |
| 1985 | 12 | 0 |
| 1986 | 5 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 2 |
| 2002 | 2 | 1 |
| 2003 | 3 | 2 |
| 2004 | 3 | 2 |
| 2005 | 3 | 2 |
| 2006 | 3 | 3 |
| 2007 | 4 | 1 |
| 2008 | 0 | 2 |
| 2009 | 1 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 1 | 1 |
| 2014 | 3 | 3 |
| 2015 | 1 | 1 |
| 2016 | 1 | 3 |
| 2017 | 4 | 2 |
| 2018 | 2 | 3 |
| 2019 | 2 | 2 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Unidirectional fuel nozzle for improving fuel atomization in a carburetor or similar apparatus7 Apr 2026US 12,595,775 B2
- Method and systems for active air fuel ratio control25 Apr 2023US 11,635,046 B1Transportation IP Holdings, LLC
- Flow control valve for charge forming device19 Jan 2021US 10,895,222 B2Walbro Corporation
- Charge forming device with air bleed control valve17 Sep 2019US 10,415,508 B2Walbro Corporation
- Carburetor and method for operating an internal combustion engine having said carburetor2 Jul 2019US 10,337,458 B2Andreas Stihl AG & CO.KG
- A unidirectional fuel nozzle for improving fuel atomization in a carburetor or similar apparatus10 Jul 2025US 2025/0223936 A1
- Flow control valve for charge forming device28 Nov 2019US 2019/0360432 A1Walbro Corporation
- Carburetor with maintenance port24 Jan 2019US 2019/0024614 A1Tti (Macao Commercial Offshore) Limited
- Carburetor with one piece choke valve and shaft assembly8 Nov 2018US 2018/0320635 A1U.S.A. Zama, Inc.
- Charge forming device with air bleed control valve11 Oct 2018US 2018/0291842 A1Walbro Corporation
Most cited
By later US patents
- Air/fuel ratio control for an internal combustion engine using an exhaust gas sensor70US 4,252,098 AChrysler Corporation · 1981
- Apparatus and system for controlling the air-fuel ratio supplied to a combustion engine46US 4,224,908 AColt Industries Operating Corp. · 1980
- Apparatus and system for controlling the air-fuel ratio supplied to a combustion engine43US 4,246,875 AColt Industries Operating Corp. · 1981
- Automatic transmission gear change shock reduction system particularly for automotive drive trains42US 4,226,141 ARobert Bosch GmbH · 1980
- Apparatus and system for controlling the air-fuel ratio supplied to a combustion engine39US 4,325,339 AColt Industries Operating Corp. · 1982