B63B 1/34
By reducing surface friction
Official title: by reducing surface friction
B63B1/34 (By reducing surface friction) appears on 486 US grants and 392 published applications in this corpus.
Search patents in B63B- Granted patents
- 486
- Published applications
- 392
- Assignees
- 176
- Inventors
- 717
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 5 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 8 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 8 | 0 |
| 1991 | 9 | 0 |
| 1992 | 7 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 7 | 0 |
| 1996 | 14 | 0 |
| 1997 | 11 | 0 |
| 1998 | 9 | 0 |
| 1999 | 11 | 0 |
| 2000 | 14 | 0 |
| 2001 | 11 | 2 |
| 2002 | 10 | 18 |
| 2003 | 17 | 11 |
| 2004 | 14 | 24 |
| 2005 | 14 | 19 |
| 2006 | 23 | 17 |
| 2007 | 13 | 9 |
| 2008 | 6 | 15 |
| 2009 | 6 | 13 |
| 2010 | 15 | 20 |
| 2011 | 10 | 18 |
| 2012 | 14 | 19 |
| 2013 | 11 | 10 |
| 2014 | 15 | 12 |
| 2015 | 13 | 20 |
| 2016 | 16 | 17 |
| 2017 | 19 | 14 |
| 2018 | 14 | 15 |
| 2019 | 14 | 12 |
| 2020 | 13 | 15 |
| 2021 | 5 | 15 |
| 2022 | 13 | 17 |
| 2023 | 10 | 17 |
| 2024 | 13 | 19 |
| 2025 | 13 | 12 |
| 2026 | 12 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System and method for reducing drag on the hull of a vessel15 Sep 2026US 12,735,146 B2
- Boundary layer testing system with enhanced entry region for angulated surfaces14 Jul 2026US 12,680,907 B2Airglide AI, Inc.
- Gas supply system applicable to gas layer drag reduction ship, and ship7 Jul 2026US 12,673,747 B2CSSC Shanghai Marine Energy Saving Technology Co., Ltd.
- Adjustable cavitator structure having double layer retractable sheet7 Jul 2026US 12,673,748 B2Dalian University of Technology
- Combined disc-type cavitation structure for underwater navigation of underwater vehicle16 Jun 2026US 12,654,807 B2Dalian University of Technology
- Dynamic airflow control for a marine vessel air lubrication system1 Oct 2026US 2026/0296597 A1Airglide AI, Inc.
- An apparatus, method and system for generating air bubbles17 Sep 2026US 2026/0274376 A1
- Plastron trapping trenches and uses thereof17 Sep 2026US 2026/0274377 A1The Regents of the University of California
- System and method for enhanced marine vessel efficiency using integrated hull optimizations3 Sep 2026US 2026/0257766 A1Airglide AI, Inc.
- The performance of dual flow conversion buoyancy to the ships process that reduce resistance6 Aug 2026US 2026/0225687 A1
Most cited
By later US patents
- Surface topographies for non-toxic bioadhesion control146US 7,650,848 B2University of Florida Research Foundation, Inc. · 2010
- Drag reduction article137US 5,133,516 AMinnesota Mining and Manufacturing Company · 1992
- Surface topographies for non-toxic bioadhesion control107US 9,016,221 B2University of Florida Research Foundation, Inc. · 2015
- Surface topography for non-toxic bioadhesion control104US 7,143,709 B2University of Florida Research Foundation, Inc. · 2006
- Streamwise variable height riblets for reducing skin friction drag of surfaces69US 6,345,791 B1Lockheed Martin Corporation · 2002