B63B 21/46
With variable
Official title: with variable {, e.g.} sliding, connection to the chain {, especially for facilitating the retrieval of the anchor}
B63B21/46 (With variable) appears on 70 US grants and 27 published applications in this corpus.
Search patents in B63B- Granted patents
- 70
- Published applications
- 27
- Assignees
- 21
- Inventors
- 94
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 5 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 1 | 1 |
| 2006 | 2 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 4 |
| 2011 | 3 | 1 |
| 2012 | 0 | 1 |
| 2013 | 2 | 4 |
| 2014 | 3 | 2 |
| 2015 | 0 | 4 |
| 2016 | 5 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 3 | 1 |
| 2021 | 1 | 1 |
| 2022 | 1 | 2 |
| 2023 | 0 | 0 |
| 2024 | 2 | 0 |
| 2025 | 0 | 1 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Retrofittable anchor retrieval accessory8 Sep 2026US 12,728,958 B1
- Extendable pole for shallow water anchoring system3 Mar 2026US 12,565,291 B1
- Anchoring device for adapting to tide level of wave energy power generation device, and operating method therefor27 Feb 2024US 11,913,420 B2Ocean University of China
- Mooring apparatus and system9 Jan 2024US 11,866,129 B2
- Anchor rescue system30 Aug 2022US 11,427,290 B2
- Module and system for improved retrieval of a stuck anchor25 Dec 2025US 2025/0388294 A1Fundacao Noras
- Anchoring device for adapting to tide level of wave energy power generation device, and operating method therefor31 Mar 2022US 2022/0099063 A1Ocean University of China
- Mooring apparatus and system24 Feb 2022US 2022/0055718 A1
- Anchor Rescue System16 Dec 2021US 2021/0387707 A1
- Mooring apparatus and system26 Nov 2020US 2020/0369346 A1
Most cited
By later US patents