F02M 33/04
Returning to the intake passage
Official title: returning to the intake passage
F02M33/04 (Returning to the intake passage) appears on 104 US grants and 44 published applications in this corpus.
Search patents in F02M- Granted patents
- 104
- Published applications
- 44
- Assignees
- 55
- Inventors
- 184
- Latest grant
- 22 Feb 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 7 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 7 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 2 |
| 2003 | 2 | 1 |
| 2004 | 3 | 2 |
| 2005 | 1 | 0 |
| 2006 | 1 | 4 |
| 2007 | 3 | 2 |
| 2008 | 3 | 3 |
| 2009 | 1 | 1 |
| 2010 | 3 | 3 |
| 2011 | 2 | 3 |
| 2012 | 2 | 4 |
| 2013 | 0 | 5 |
| 2014 | 5 | 5 |
| 2015 | 6 | 3 |
| 2016 | 2 | 2 |
| 2017 | 3 | 1 |
| 2018 | 2 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 2 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Inline high frequency fiber silencer22 Feb 2022US 11,255,303 B2Toledo Molding & Die, Inc.
- Structure for suctioning back blow-back fuel2 Nov 2021US 11,162,463 B2Kawasaki Jukogyo Kabushiki Kaisha
- Apparatus for reducing fuel evaporation gas using closeable path structure11 Jun 2019US 10,316,806 B2Hyundai Motor Company
- Variable capacity, configurable hydrocarbon emissions trap10 Jul 2018US 10,018,160 B2Ford Global Technologies, LLC
- Flexible porous non-pollutive tube3 Apr 2018US 9,932,942 B2
- Inline high frequency fiber silencer23 Jul 2020US 2020/0232429 A1Toledo Molding & Die, Inc.
- Structure for suctioning back blow-back fuel5 Mar 2020US 2020/0072171 A1Kawasaki Jukogyo Kabushiki Kaisha
- Apparatus for reducing fuel evaporation gas using closeable path structure21 Jun 2018US 2018/0171947 A1Hyundai Motor Company
- Variable capacity, configurable hydrocarbon emissions trap27 Jul 2017US 2017/0211518 A1Ford Global Technologies, LLC
- Engine Air Intake Duct with Molded-In Hydrocarbon Vapor Trap3 Mar 2016US 2016/0059468 A1Ford Global Technologies, LLC
Most cited
By later US patents
- Internal combustion engine and method of operating it33US 4,117,813 AYamaha Hatsudoki Kabushiki Kaisha · 1978
- Exhaust gas recirculating device29US 4,327,698 ANissan Motor Co., Ltd. · 1982
- Air filter choke valve method and spitback shield27US 4,834,784 ATextron Inc. · 1989
- Auxiliary fuel supply device for internal combustion engines25US 4,335,061 AWalbro Far East, Inc. · 1982
- Fuel efficient, low pollution carburetor and methods25US 4,515,734 A1985