B63B 21/18
Stoppers for anchor chains
Official title: Stoppers for anchor chains {(anchor capstans B66D1/72)}
B63B21/18 (Stoppers for anchor chains) appears on 95 US grants and 85 published applications in this corpus.
Search patents in B63B- Granted patents
- 95
- Published applications
- 85
- Assignees
- 67
- Inventors
- 168
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 5 | 2 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 2 |
| 2007 | 3 | 1 |
| 2008 | 2 | 2 |
| 2009 | 2 | 0 |
| 2010 | 0 | 2 |
| 2011 | 1 | 1 |
| 2012 | 1 | 2 |
| 2013 | 0 | 6 |
| 2014 | 5 | 6 |
| 2015 | 7 | 6 |
| 2016 | 5 | 6 |
| 2017 | 7 | 8 |
| 2018 | 3 | 0 |
| 2019 | 5 | 7 |
| 2020 | 7 | 3 |
| 2021 | 2 | 9 |
| 2022 | 3 | 5 |
| 2023 | 5 | 2 |
| 2024 | 3 | 6 |
| 2025 | 5 | 4 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Mooring systems for fixed marine structures14 Apr 2026US 12,600,436 B2Entrion Wind, Inc.
- Buoyant rotatable marine transducer31 Mar 2026US 12,589,837 B2Dublin Offshore Consultants Ltd
- Detachable mooring system for offshore structure30 Dec 2025US 12,509,837 B2Dhmc Co., Ltd.
- Display device comprising adhesive layer comprising magnesium compound and yttrium compound and method of manufacturing the same28 Oct 2025US 12,457,848 B2Samsung Display Co., Ltd.
- Mooring/tensioning apparatus13 May 2025US 12,296,927 B2Flintstone Technology Limited
- A Tow Pin Device and a Tow Pin and Shark Jaw Arrangement20 Aug 2026US 2026/0242036 A1Kongsberg Maritime AS
- Chain compressor and anchoring device including same19 Mar 2026US 2026/0077833 A1Hd Hyundai Heavy Industries Co., Ltd.
- A method for triple tensioning of a mooring system with anchors on a seabed27 Nov 2025US 2025/0360987 A1Kongsberg Maritime AS
- Chain tensioners for mooring of offshore floating structures13 Nov 2025US 2025/0346326 A1I.P. Huse AS
- Watercraft with automatic control, method for controlling an anchored watercraft, and control system for a watercraft17 Apr 2025US 2025/0121916 A1
Most cited
By later US patents
- Method and apparatus for tensioning and deploying mooring chain23US 5,934,216 AOceaneering International, Inc. · 1999
- Anchoring system and chain stopper therefor21US 3,967,572 ASanta Fe International Corporation · 1976
- Mechanism for tensioning a moving chain18US 4,862,821 AJohn T. Hepburn, Limited · 1989
- Dual axis chain support with chain pull through18US 7,926,436 B2Sofec, Inc. · 2011
- Chain stopper17US 4,186,464 APusnes Mek, Verksted A/S · 1980