F02M 13/00
Arrangements of two or more separate carburettors
Official title: Arrangements of two or more separate carburettors (re-atomising condensed fuel or homogenising fuel-air mixture F02M29/00); Carburettors using more than one fuel (apparatus for adding small quantities of secondary fuel F02M25/00)
F02M13/00 (Arrangements of two or more separate carburettors) appears on 299 US grants and 70 published applications in this corpus.
Search patents in F02M- Granted patents
- 299
- Published applications
- 70
- Assignees
- 106
- Inventors
- 416
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 21 | 0 |
| 1978 | 19 | 0 |
| 1979 | 7 | 0 |
| 1980 | 11 | 0 |
| 1981 | 11 | 0 |
| 1982 | 16 | 0 |
| 1983 | 25 | 0 |
| 1984 | 20 | 0 |
| 1985 | 16 | 0 |
| 1986 | 8 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 9 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 8 | 0 |
| 2000 | 6 | 0 |
| 2001 | 9 | 1 |
| 2002 | 5 | 4 |
| 2003 | 5 | 1 |
| 2004 | 2 | 7 |
| 2005 | 5 | 0 |
| 2006 | 3 | 3 |
| 2007 | 1 | 3 |
| 2008 | 5 | 6 |
| 2009 | 2 | 7 |
| 2010 | 3 | 5 |
| 2011 | 6 | 2 |
| 2012 | 5 | 3 |
| 2013 | 1 | 2 |
| 2014 | 3 | 2 |
| 2015 | 3 | 3 |
| 2016 | 3 | 4 |
| 2017 | 3 | 5 |
| 2018 | 3 | 1 |
| 2019 | 3 | 2 |
| 2020 | 4 | 3 |
| 2021 | 2 | 0 |
| 2022 | 1 | 1 |
| 2023 | 1 | 1 |
| 2024 | 1 | 1 |
| 2025 | 0 | 3 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Dual fuel selector switch8 Sep 2026US 12,729,655 B2Champion Power Equipment, Inc.
- Dual fuel selector switch1 Sep 2026US 12,723,549 B2Champion Power Equipment, Inc.
- Dual fuel selector switch20 Feb 2024US 11,905,896 B2Champion Power Equipment, Inc.
- Dual fuel selector switch19 Sep 2023US 11,761,390 B2Champion Power Equipment, Inc.
- Dual fuel selector switch19 Apr 2022US 11,306,667 B2Champion Power Equipment, Inc.
- Automatic gas-fuel switching system11 Dec 2025US 2025/0376964 A1Chongqing Am Pride Power & Machinery Co., Ltd
- Dual fuel selector switch22 May 2025US 2025/0163860 A1Champion Power Equipment, Inc.
- Dual fuel selector switch15 May 2025US 2025/0154912 A1Champion Power Equipment, Inc.
- Dual fuel selector switch6 Jun 2024US 2024/0183321 A1Champion Power Equipment, Inc.
- Dual fuel selector switch5 Oct 2023US 2023/0313747 A1Champion Power Equipment, Inc.
Most cited
By later US patents
- Duel fuel system for internal combustion engine112US 4,019,477 A1977
- Internal combustion engine dual fuel system73US 4,335,697 A1982
- Internal combustion system using acetylene fuel67US 6,076,487 AGo-Tec · 2000
- Internal combustion system adapted for use of a dual fuel composition including acetylene65US 6,575,147 B2Go-Tec · 2003
- Dual fuel method and system64US 6,591,817 B2Motorola, Inc. · 2003