B63B 21/48
Sea-anchors
Official title: Sea-anchors; Drogues
B63B21/48 (Sea-anchors) appears on 67 US grants and 47 published applications in this corpus.
Search patents in B63B- Granted patents
- 67
- Published applications
- 47
- Assignees
- 30
- Inventors
- 114
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 4 |
| 2003 | 3 | 0 |
| 2004 | 3 | 1 |
| 2005 | 1 | 2 |
| 2006 | 1 | 2 |
| 2007 | 3 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 2 | 1 |
| 2013 | 1 | 2 |
| 2014 | 1 | 2 |
| 2015 | 3 | 5 |
| 2016 | 3 | 2 |
| 2017 | 1 | 4 |
| 2018 | 1 | 0 |
| 2019 | 3 | 5 |
| 2020 | 3 | 4 |
| 2021 | 4 | 2 |
| 2022 | 1 | 1 |
| 2023 | 0 | 1 |
| 2024 | 1 | 1 |
| 2025 | 2 | 3 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Marine driver system8 Sep 2026US 12,728,959 B2Women At Work Group Pty Ltd
- Anchor systems and methods16 Jun 2026US 12,654,809 B2Mhwirth AS
- Parachute sea anchor1 Apr 2025US 12,263,917 B2BAE SYSTEMS plc
- Expandable drift sock system11 Mar 2025US 12,246,799 B1
- Water-buoyant structure4 Jun 2024US 11,999,448 B2Waterborne Development Company Pty Limited
- Expandable drift sock system28 May 2026US 2026/0145765 A1
- Sea Anchor14 May 2026US 2026/0131873 A1
- Marine vessel and control device therefor25 Dec 2025US 2025/0388296 A1Yamaha Hatsudoki Kabushiki Kaisha
- Marine vessel and control device therefor25 Dec 2025US 2025/0388297 A1Yamaha Hatsudoki Kabushiki Kaisha
- Marine driver system6 Mar 2025US 2025/0074550 A1Women At Work Group Pty Ltd
Most cited
By later US patents
- Acknowledge back pager with apparatus for controlling transmit frequency92US 4,891,637 AMotorola, Inc. · 1990
- Stabilizer ring for a sea anchor21US 6,550,413 B22003
- Sea anchor assembly for kayak17US 5,025,746 A1991
- Spring biased drift anchor16US 6,135,046 A2000
- Net engagement with parachute slowdown (NEPS) system16US 9,308,970 B1SRI International · 2016