B63H 1/28
Other means for improving propeller efficiency
B63H1/28 (Other means for improving propeller efficiency) appears on 154 US grants and 125 published applications in this corpus.
Search patents in B63H- Granted patents
- 154
- Published applications
- 125
- Assignees
- 76
- Inventors
- 268
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 6 | 0 |
| 2002 | 3 | 4 |
| 2003 | 3 | 6 |
| 2004 | 5 | 4 |
| 2005 | 4 | 5 |
| 2006 | 3 | 4 |
| 2007 | 4 | 0 |
| 2008 | 2 | 3 |
| 2009 | 3 | 5 |
| 2010 | 1 | 2 |
| 2011 | 2 | 4 |
| 2012 | 2 | 3 |
| 2013 | 2 | 4 |
| 2014 | 6 | 4 |
| 2015 | 5 | 9 |
| 2016 | 4 | 4 |
| 2017 | 3 | 8 |
| 2018 | 8 | 8 |
| 2019 | 7 | 8 |
| 2020 | 9 | 8 |
| 2021 | 2 | 3 |
| 2022 | 5 | 8 |
| 2023 | 1 | 5 |
| 2024 | 5 | 5 |
| 2025 | 7 | 7 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Energy-saving arrangement for twin-screw ships25 Aug 2026US 12,715,564 B2Becker Marine Systems GmbH & Co.KG
- Outboard engine26 May 2026US 12,640,615 B2Honda Motor Co., Ltd.
- End cap for guiding an exhaust gas flow of a boat engine, propeller system for a boat engine, boat engine, and use of an end cap and method for guiding an exhaust gas flow of a boat engine2 Dec 2025US 12,486,013 B2Neuro-Net GmbH
- Rudder16 Sep 2025US 12,415,593 B2Kay Seven Co., Ltd.
- Duo-propellers and single propellers26 Aug 2025US 12,397,889 B2Sharrow Engineering LLC
- Rotary Propeller Featuring Enhanced Slot Effect Through Staggered Blade Configurations4 Jun 2026US 2026/0153096 A1
- Method and system for enhancing propulsion efficiency of rotating aero and hydro dynamic blades through vortex-induced flow modification23 Apr 2026US 2026/0109451 A1Delta Burn Pte Ltd
- Propeller12 Mar 2026US 2026/0071546 A1Conic Propulsion, LLC
- Thrust rings, propellers and methods12 Feb 2026US 2026/0043332 A1Sharrow Engineering LLC
- Duo-propellers and single propellers27 Nov 2025US 2025/0360996 A1
Most cited
By later US patents
- Hydrofoils and airfoils56US 5,540,406 A1996
- Wake absorber49US 6,935,263 B1The United States of America as represented by the Secretary of the Navy · 2005
- Surface of a body exposed to circumfluent fluid41US 5,860,626 A1999
- Regulated aeration of gases exhausting through a propeller37US 4,802,872 A1989
- Controlled passive porosity systems to mitigate cavitation36US 6,368,059 B1Lockheed Martin Corporation · 2002