B63H 25/38
Rudders
B63H25/38 (Rudders) appears on 368 US grants and 254 published applications in this corpus.
Search patents in B63H- Granted patents
- 368
- Published applications
- 254
- Assignees
- 166
- Inventors
- 560
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 5 | 0 |
| 1978 | 9 | 0 |
| 1979 | 0 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 5 | 0 |
| 1984 | 7 | 0 |
| 1985 | 7 | 0 |
| 1986 | 4 | 0 |
| 1987 | 6 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 6 | 0 |
| 1991 | 5 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 11 | 0 |
| 2001 | 9 | 3 |
| 2002 | 12 | 10 |
| 2003 | 12 | 10 |
| 2004 | 8 | 3 |
| 2005 | 5 | 6 |
| 2006 | 10 | 6 |
| 2007 | 0 | 7 |
| 2008 | 4 | 12 |
| 2009 | 5 | 9 |
| 2010 | 9 | 10 |
| 2011 | 6 | 7 |
| 2012 | 9 | 8 |
| 2013 | 3 | 5 |
| 2014 | 11 | 9 |
| 2015 | 8 | 8 |
| 2016 | 11 | 13 |
| 2017 | 11 | 21 |
| 2018 | 18 | 12 |
| 2019 | 14 | 11 |
| 2020 | 7 | 11 |
| 2021 | 13 | 11 |
| 2022 | 13 | 14 |
| 2023 | 8 | 19 |
| 2024 | 12 | 6 |
| 2025 | 14 | 12 |
| 2026 | 6 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B63H 25/382Movable otherwise than for steering purposes135
- B63H 25/381With flaps33
- B63H 2025/387Comprising two or more rigidly interconnected mutually spaced blades pivotable about aIndexing code16
- B63H 2025/388With varying angle of attack over the height of the rudder bladeIndexing code10
- B63H 25/40Using magnus effect8
Recent patents
- Systems and methods for steering a watercraft15 Sep 2026US 12,735,155 B2Arc Boat Company
- Wakesurfing systems and methods25 Aug 2026US 12,715,555 B1Brunswick Corporation
- Pontoon watercraft with electrical propulsion11 Aug 2026US 12,703,462 B2Hyper Electric Marine Inc.
- Power steering device for inflatable boat7 Jul 2026US 12,673,762 B2Boluo Futian Fumao plastic hardware products Co., Ltd.
- Watercraft and method of propulsion of a watercraft16 Jun 2026US 12,654,830 B2
- Watercraft and method of propulsion of a watercraft10 Sep 2026US 2026/0264825 A1
- Autonomous navigation ship27 Aug 2026US 2026/0249966 A1SoftBank Group Corp.
- Tiller27 Aug 2026US 2026/0249971 A1Reecher Marine AB
- Method and apparatus for controlling ship propulsion, and a propulsion system20 Aug 2026US 2026/0242042 A1Wartsila Netherlands B.V.
- Flying marine vessel6 Aug 2026US 2026/0225699 A1
Most cited
By later US patents
- Adaptive control surface using antagonistic shape memory alloy tendons103US 5,662,294 ALockheed Martin Corporation · 1997
- Personal watercraft and off-power steering system for a personal watercraft58US 6,523,489 B2Bombardier Inc. · 2003
- Steering system for high performance powerboats57US 5,359,956 A1994
- High efficiency hydrofoil and swim fin designs56US 5,746,631 A1998
- Side plate rudder system55US 6,415,729 B1The United States of America as represented by the Secretary of the Navy · 2002