B63H 21/00
Use of propulsion power plant or units on vessels
B63H21/00 (Use of propulsion power plant or units on vessels) appears on 3,502 US grants and 3,225 published applications in this corpus.
Search patents in B63H- Granted patents
- 3,502
- Published applications
- 3,225
- Assignees
- 995
- Inventors
- 5,032
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 18 | 0 |
| 1978 | 15 | 0 |
| 1979 | 5 | 0 |
| 1980 | 18 | 0 |
| 1981 | 15 | 0 |
| 1982 | 10 | 0 |
| 1983 | 15 | 0 |
| 1984 | 8 | 0 |
| 1985 | 14 | 0 |
| 1986 | 13 | 0 |
| 1987 | 21 | 0 |
| 1988 | 28 | 0 |
| 1989 | 19 | 0 |
| 1990 | 29 | 0 |
| 1991 | 30 | 0 |
| 1992 | 24 | 0 |
| 1993 | 35 | 0 |
| 1994 | 37 | 0 |
| 1995 | 31 | 0 |
| 1996 | 45 | 0 |
| 1997 | 36 | 0 |
| 1998 | 57 | 0 |
| 1999 | 50 | 0 |
| 2000 | 70 | 0 |
| 2001 | 75 | 18 |
| 2002 | 81 | 64 |
| 2003 | 83 | 90 |
| 2004 | 87 | 103 |
| 2005 | 93 | 84 |
| 2006 | 82 | 81 |
| 2007 | 73 | 70 |
| 2008 | 60 | 78 |
| 2009 | 56 | 95 |
| 2010 | 45 | 74 |
| 2011 | 69 | 96 |
| 2012 | 76 | 99 |
| 2013 | 83 | 78 |
| 2014 | 109 | 83 |
| 2015 | 104 | 144 |
| 2016 | 106 | 97 |
| 2017 | 139 | 121 |
| 2018 | 124 | 179 |
| 2019 | 163 | 149 |
| 2020 | 149 | 128 |
| 2021 | 137 | 174 |
| 2022 | 143 | 238 |
| 2023 | 151 | 226 |
| 2024 | 184 | 263 |
| 2025 | 216 | 222 |
| 2026 | 155 | 171 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B63H 21/21Control means for engine or transmission, specially adapted for use on marine1,280
- B63H 21/12The vessels being motor-driven1,143
- B63H 21/38Apparatus or methods specially adapted for use on marine vessels, for handling502
- B63H 21/32Arrangements of propulsion power-unit exhaust uptakes375
- B63H 21/30Mounting of propulsion plant or unit310
- B63H 21/22The propulsion power units being controlled from exterior of engine room287
- B63H 21/20The vessels being powered by combinations of different types of propulsion units260
- B63H 21/24The vessels being small craft152
All 14 subgroupsShow fewer
- B63H 2021/003The power plant using fuel cells for energy supply or accumulationIndexing code57
- B63H 21/36Covers or casing arranged to protect plant or unit from marine environment42
- B63H 21/175The vessel being powered by land vehicle supported by vessel36
- B63H 21/02The vessels being steam-driven35
- B63H 21/18The vessels being powered by nuclear energy7
- B63H 2021/006The vessel being driven by hot gas positive-displacement engine plants of closed-cycleIndexing code2
Recent patents
- Power systems and methods for controlling power for marine vessels6 Oct 2026US 12,752,898 B1Brunswick Corporation
- Watercraft propulsion system, and watercraft6 Oct 2026US 12,752,899 B2Yamaha Hatsudoki Kabushiki Kaisha
- Detachable control module for a marine device6 Oct 2026US 12,752,900 B2Navico Group Americas, LLC
- Thermal management systems for marine vessels6 Oct 2026US 12,752,901 B1Brunswick Corporation
- Power-saving liquefied-gas-fuel ship and method for processing boil-off gas for liquefied-gas-fuel ship6 Oct 2026US 12,753,884 B2Hanwha Ocean Co., Ltd.
- Combined fuel level sending unit and fuel fill limit vent valve8 Oct 2026US 2026/0307473 A1Whitecap Industries, Inc.
- Pod drive8 Oct 2026US 2026/0307770 A1Hd Hyundai Electric Co., Ltd.
- Establishing secure communication between an interface device and control systems of an electric marine vessel8 Oct 2026US 2026/0307771 A1Vision Marine Technologies
- Propulsion system of boat1 Oct 2026US 2026/0296615 A1Honda Motor Co., Ltd.
- Cycloidal marine propulsion system1 Oct 2026US 2026/0296621 A1
Most cited
By later US patents
- Shift assisting device1,417US 4,973,274 ASanshin Kogyo Kabushiki Kaisha · 1990
- Control system for a marine vessel495US 6,273,771 B1Brunswick Corporation · 2001
- Hand controller255US 4,216,467 AWestinghouse Electric Corp. · 1980
- Energy-generating plant, particularly propeller-type ship's propulsion plant, including a solar generator225US 5,235,266 ASchottel-Werft Josef Becker GmbH & Co. KG · 1993
- Machine mounting system192US 7,552,903 B2Solar Turbines Incorporated · 2009