B63H 20/24
Arrangements, apparatus and methods for handling exhaust gas in outboard drives
Official title: {Arrangements, apparatus and methods for handling exhaust gas in outboard drives, e.g.} exhaust gas outlets {(in engines, e.g. outboard marine engines, F01N)}
B63H20/24 (Arrangements, apparatus and methods for handling exhaust gas in outboard drives) appears on 442 US grants and 178 published applications in this corpus.
Search patents in B63H- Granted patents
- 442
- Published applications
- 178
- Assignees
- 57
- Inventors
- 514
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 1 | 0 |
| 1988 | 5 | 0 |
| 1989 | 5 | 0 |
| 1990 | 21 | 0 |
| 1991 | 8 | 0 |
| 1992 | 20 | 0 |
| 1993 | 5 | 0 |
| 1994 | 20 | 0 |
| 1995 | 9 | 0 |
| 1996 | 18 | 0 |
| 1997 | 7 | 0 |
| 1998 | 10 | 0 |
| 1999 | 17 | 0 |
| 2000 | 11 | 0 |
| 2001 | 9 | 3 |
| 2002 | 5 | 9 |
| 2003 | 9 | 2 |
| 2004 | 5 | 5 |
| 2005 | 7 | 4 |
| 2006 | 6 | 4 |
| 2007 | 5 | 3 |
| 2008 | 2 | 4 |
| 2009 | 4 | 2 |
| 2010 | 4 | 6 |
| 2011 | 4 | 1 |
| 2012 | 4 | 4 |
| 2013 | 6 | 16 |
| 2014 | 12 | 10 |
| 2015 | 15 | 6 |
| 2016 | 24 | 19 |
| 2017 | 21 | 13 |
| 2018 | 18 | 10 |
| 2019 | 19 | 4 |
| 2020 | 7 | 10 |
| 2021 | 14 | 7 |
| 2022 | 11 | 12 |
| 2023 | 13 | 10 |
| 2024 | 16 | 10 |
| 2025 | 10 | 2 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Outboard motor and vessel17 Mar 2026US 12,576,957 B2Yamaha Hatsudoki Kabushiki Kaisha
- Lower unit for a marine propulsion device24 Feb 2026US 12,559,218 B1Brunswick Corporation
- Outboard motor and marine vessel17 Feb 2026US 12,552,507 B2Yamaha Hatsudoki Kabushiki Kaisha
- End cap for guiding an exhaust gas flow of a boat engine, propeller system for a boat engine, boat engine, and use of an end cap and method for guiding an exhaust gas flow of a boat engine2 Dec 2025US 12,486,013 B2Neuro-Net GmbH
- Outboard motor28 Oct 2025US 12,454,340 B2Yamaha Hatsudoki Kabushiki Kaisha
- 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.
- Exhaust handling systems for marine vessels and related methods27 Nov 2025US 2025/0360999 A1Marathon Petroleum Company LP
- Outboard motor and marine vessel14 Aug 2025US 2025/0256822 A1Yamaha Hatsudoki Kabushiki Kaisha
- Outboard engine assembly having an idle relief system31 Oct 2024US 2024/0359784 A1BRP US Inc.
Most cited
By later US patents
- Propeller hub assembly having overlap zone with optional removable exhaust ring and sized ventilation plugs140US 7,056,091 B22006
- Dual water injector for primary and idle relief exhaust passages69US 7,001,231 B1Brunswick Corporation · 2006
- Exhaust coupling assembly for a marine stern drive47US 4,178,873 ABrunswick Corporation · 1979
- Boat drive43US 4,600,395 AAB Volvo Penta · 1986
- Idle relief mufflers and outboard motors having idle relief mufflers42US 9,376,194 B1Brunswick Corporation · 2016