B63H 21/14
Relating to internal-combustion engines
Official title: relating to internal-combustion engines {(of outboard type B63H20/00)}
B63H21/14 (Relating to internal-combustion engines) appears on 313 US grants and 271 published applications in this corpus.
Search patents in B63H- Granted patents
- 313
- Published applications
- 271
- Assignees
- 112
- Inventors
- 502
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 5 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 7 | 0 |
| 2000 | 11 | 0 |
| 2001 | 6 | 5 |
| 2002 | 12 | 14 |
| 2003 | 14 | 21 |
| 2004 | 21 | 18 |
| 2005 | 12 | 7 |
| 2006 | 14 | 9 |
| 2007 | 7 | 4 |
| 2008 | 4 | 8 |
| 2009 | 7 | 14 |
| 2010 | 6 | 2 |
| 2011 | 2 | 0 |
| 2012 | 2 | 8 |
| 2013 | 2 | 3 |
| 2014 | 5 | 1 |
| 2015 | 4 | 14 |
| 2016 | 6 | 8 |
| 2017 | 15 | 13 |
| 2018 | 16 | 20 |
| 2019 | 23 | 11 |
| 2020 | 16 | 5 |
| 2021 | 13 | 21 |
| 2022 | 16 | 19 |
| 2023 | 20 | 18 |
| 2024 | 12 | 13 |
| 2025 | 13 | 9 |
| 2026 | 4 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Marine vessel5 May 2026US 12,617,505 B2Yamaha Hatsudoki Kabushiki Kaisha
- Variable torque motor/generator/transmission3 Mar 2026US 12,567,823 B2Falcon Power, LLC
- Split cooling system for marine jet engine3 Feb 2026US 12,539,954 B2
- System and method of hybrid marine propulsion6 Jan 2026US 12,515,775 B2Glas Ocean Electric Inc.
- Ship control method, ship control program, and ship control system, and ship30 Dec 2025US 12,509,205 B2Yanmar Holdings Co., Ltd.
- Propulsion system of boat1 Oct 2026US 2026/0296622 A1Honda Motor Co., Ltd.
- Method and apparatus for controlling ship propulsion, and a propulsion system20 Aug 2026US 2026/0242042 A1Wartsila Netherlands B.V.
- Reduction of nox and n2o in the exhaust gas of ship motors operated using nh330 Jul 2026US 2026/0216649 A1
- Marine drive system comprising an interceptor assembly4 Jun 2026US 2026/0152270 A1AB Volvo Penta
- Protective sulfur removal system for enhanced methane slip catalysts in sulfur-containing exhaust21 May 2026US 2026/0138084 A1Cdti Advanced Materials, Inc.
Most cited
By later US patents
- Marine hulls and drives97US 7,984,684 B22011
- Control for marine propulsion57US 6,015,319 ASanshin Kogyo Kabushiki Kaisha · 2000
- Acceleration control system for a marine vessel51US 7,214,110 B1Brunswick Corporation · 2007
- Four-cycle engine for a small jet boat47US 5,846,102 AKawasaki Jukogyo Kabushiki Kaisha · 1998
- Air-intake system for watercraft42US 5,957,072 AYamaha Hatsudoki Kabushiki Kaisha · 1999