F02B 61/04
Adaptations of engines for driving vehicles or for driving propellers: for driving
Official title: for driving propellers
F02B61/04 (Adaptations of engines for driving vehicles or for driving propellers: for driving) appears on 3,140 US grants and 853 published applications in this corpus.
Search patents in F02B- Granted patents
- 3,140
- Published applications
- 853
- Assignees
- 387
- Inventors
- 2,487
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 50 | 0 |
| 1977 | 26 | 0 |
| 1978 | 35 | 0 |
| 1979 | 12 | 0 |
| 1980 | 31 | 0 |
| 1981 | 34 | 0 |
| 1982 | 43 | 0 |
| 1983 | 52 | 0 |
| 1984 | 35 | 0 |
| 1985 | 68 | 0 |
| 1986 | 59 | 0 |
| 1987 | 81 | 0 |
| 1988 | 107 | 0 |
| 1989 | 107 | 0 |
| 1990 | 110 | 0 |
| 1991 | 112 | 0 |
| 1992 | 90 | 0 |
| 1993 | 100 | 0 |
| 1994 | 82 | 0 |
| 1995 | 69 | 0 |
| 1996 | 111 | 0 |
| 1997 | 85 | 0 |
| 1998 | 114 | 0 |
| 1999 | 153 | 0 |
| 2000 | 175 | 0 |
| 2001 | 162 | 69 |
| 2002 | 173 | 142 |
| 2003 | 159 | 122 |
| 2004 | 108 | 66 |
| 2005 | 82 | 41 |
| 2006 | 46 | 30 |
| 2007 | 31 | 37 |
| 2008 | 27 | 9 |
| 2009 | 20 | 9 |
| 2010 | 11 | 12 |
| 2011 | 10 | 9 |
| 2012 | 15 | 9 |
| 2013 | 6 | 24 |
| 2014 | 13 | 11 |
| 2015 | 26 | 15 |
| 2016 | 31 | 40 |
| 2017 | 30 | 28 |
| 2018 | 34 | 36 |
| 2019 | 56 | 22 |
| 2020 | 26 | 36 |
| 2021 | 32 | 20 |
| 2022 | 37 | 22 |
| 2023 | 27 | 17 |
| 2024 | 18 | 16 |
| 2025 | 14 | 6 |
| 2026 | 5 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hybrid drive and fuel vaporizer for UAV and other mobile environments18 Aug 2026US 12,709,419 B2LiquidPiston, Inc.
- Power unit12 May 2026US 12,624,666 B2Kawasaki Motors, Ltd.
- Outboard motor and marine vessel5 May 2026US 12,617,511 B2Yamaha Hatsudoki Kabushiki Kaisha
- Systems and methods for optimizing driveshaft coupling of marine propulsion device10 Mar 2026US 12,570,383 B1Brunswick Corporation
- Systems and methods for controlling combustion in an engine of a marine drive3 Mar 2026US 12,565,851 B1Brunswick Corporation
- Outboard motor6 Aug 2026US 2026/0225701 A1Yamaha Hatsudoki Kabushiki Kaisha
- Pass-through fitting assembly for outboard engine assembly16 Jul 2026US 2026/0200568 A1BRP US Inc.
- Systems and methods for optimizing driveshaft coupling of marine propulsion device9 Jul 2026US 2026/0192905 A1Brunswick Corporation
- Vapor separator tank29 Jan 2026US 2026/0028952 A1Mikuni Corporation
- Air-cooled, four-stroke aviation engine22 Jan 2026US 2026/0022676 A1Textron Innovations Inc.
Most cited
By later US patents
- Control system for controlling object using pseudo-emotions and pseudo-personality generated in the object95US 6,230,111 B1Yamaha Hatsudoki Kabushiki Kaisha · 2001
- Method and apparatus for controlling the power output of a homogenous charge internal combustion engine89US 6,360,724 B1Brunswick Corporation · 2002
- Magnetic field energy responsive position sensing apparatus and method87US 5,789,915 ANartron Corporation · 1998
- Air cleaner for internal combustion engine84US 5,120,334 AFord Motor Company · 1992
- Trim control80US 4,318,699 ABrunswick Corporation · 1982