B63H 5/165
Propeller guards, line cutters or other means for protecting propellers or rudders
Official title: {Propeller guards, line cutters or other means for protecting propellers or rudders}
B63H5/165 (Propeller guards, line cutters or other means for protecting propellers or rudders) appears on 192 US grants and 90 published applications in this corpus.
Search patents in B63H- Granted patents
- 192
- Published applications
- 90
- Assignees
- 52
- Inventors
- 236
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 5 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 10 | 0 |
| 1991 | 7 | 0 |
| 1992 | 1 | 0 |
| 1993 | 6 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 6 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 10 | 0 |
| 2000 | 6 | 0 |
| 2001 | 3 | 2 |
| 2002 | 4 | 2 |
| 2003 | 5 | 3 |
| 2004 | 4 | 4 |
| 2005 | 5 | 6 |
| 2006 | 6 | 3 |
| 2007 | 3 | 4 |
| 2008 | 4 | 5 |
| 2009 | 4 | 1 |
| 2010 | 0 | 2 |
| 2011 | 4 | 2 |
| 2012 | 1 | 1 |
| 2013 | 2 | 6 |
| 2014 | 5 | 5 |
| 2015 | 6 | 3 |
| 2016 | 7 | 4 |
| 2017 | 5 | 5 |
| 2018 | 4 | 3 |
| 2019 | 6 | 3 |
| 2020 | 4 | 3 |
| 2021 | 2 | 5 |
| 2022 | 3 | 4 |
| 2023 | 3 | 3 |
| 2024 | 5 | 3 |
| 2025 | 2 | 6 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Maritime apparatus28 Jan 2025US 12,208,867 B2Sea Transport Design Pty Ltd
- Durable biofouling protection10 Dec 2024US 12,161,977 B2Biofouling Technologies, Inc.
- Outboard drive assemblies19 Nov 2024US 12,145,704 B2Weedoo Greenboat, Inc
- Weed deflection device24 Sep 2026US 2026/0285460 A1
- An electric saildrive25 Jun 2026US 2026/0175954 A1Searine A/S
- Weed and Line Cutter Installation Tool11 Sep 2025US 2025/0282458 A1
- Durable biofouling protection8 May 2025US 2025/0144573 A1Biofouling Technologies, Inc.
- Durable biofouling protection20 Mar 2025US 2025/0091018 A1Biofouling Technologies, Inc.
Most cited
By later US patents
- Electronic propeller guard76US 6,676,460 B1Maruta Electric Boatworks LLC · 2004
- Motorboat propeller guard for improved performance49US 4,680,017 A1987
- Anti-ventilation means for marine gear case37US 4,447,214 AOutboard Marine Corporation · 1984
- Thrust enhancing propeller guard assembly35US 6,475,045 B22002
- Boat propeller guard31US 4,565,533 A1986