B63H 2023/327
Sealings specially adapted for propeller shafts or stern tubes
Official title: {Sealings specially adapted for propeller shafts or stern tubes}
B63H2023/327 (Sealings specially adapted for propeller shafts or stern tubes) appears on 151 US grants and 60 published applications in this corpus.
Search patents in B63H- Granted patents
- 151
- Published applications
- 60
- Assignees
- 76
- Inventors
- 265
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 6 | 0 |
| 1984 | 8 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 12 | 0 |
| 1995 | 8 | 0 |
| 1996 | 5 | 0 |
| 1997 | 8 | 0 |
| 1998 | 5 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 3 |
| 2005 | 1 | 2 |
| 2006 | 0 | 2 |
| 2007 | 1 | 2 |
| 2008 | 1 | 0 |
| 2009 | 1 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 7 |
| 2014 | 1 | 1 |
| 2015 | 3 | 7 |
| 2016 | 4 | 2 |
| 2017 | 1 | 6 |
| 2018 | 6 | 1 |
| 2019 | 2 | 1 |
| 2020 | 3 | 2 |
| 2021 | 1 | 2 |
| 2022 | 1 | 6 |
| 2023 | 5 | 4 |
| 2024 | 1 | 2 |
| 2025 | 3 | 6 |
| 2026 | 4 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Arrangement and method for sealing a propeller shaft of a marine vessel8 Sep 2026US 12,728,975 B2ABB AB
- Arrangement and method for sealing a propeller shaft of a marine vessel18 Aug 2026US 12,709,372 B2ABB AB
- Propulsion unit for a marine vessel7 Apr 2026US 12,595,038 B2ABB AB
- Shaft seal6 Jan 2026US 12,515,777 B2Tides Marine, Inc.
- Propulsion unit for a waterborne vessel21 Oct 2025US 12,448,100 B1Superstream, Inc.
- Shaft Seal7 May 2026US 2026/0125144 A1Tides Marine, Inc.
- Propeller shaft hybrid lip and labyrinth seal18 Dec 2025US 2025/0382993 A1Pratt & Whitney Canada Corp.
- Sealing assembly and retractable thruster system therefor20 Nov 2025US 2025/0353584 A1Steerprop Oy
- Seal ring, shaft seal assembly, ship propeller and ship13 Nov 2025US 2025/0346338 A1Shantou Xinshuo Technology Co., Ltd.
- A thrust generating assembly24 Jul 2025US 2025/0236376 A1Kongsberg Maritime Sweden AB
Most cited
By later US patents
- Marine jet drive48US 5,421,753 A1995
- Pressure insensitive lip seal45US 4,344,631 AMechanical Technology Incorporated · 1982
- Shaft seal assembly with inflatable annular member40US 4,448,425 AHowaldtswerke-Deutsche Werft Aktiengesellschaft Hamburg und Kiel · 1984
- Safety device for seal systems for propeller shafts on ships38US 5,643,026 ABlohm + Voss Holding AG · 1997
- Adjustable seal for propeller drive shaft37US 5,639,098 ADuramax, Inc. · 1997