B63G 8/22
Adjustment of buoyancy by water ballasting
Official title: Adjustment of buoyancy by water ballasting; Emptying equipment for ballast tanks ({conduits for emptying or ballasting on vessels in general B63B13/00;} stabilising vessels using ballast tanks B63B43/06)
B63G8/22 (Adjustment of buoyancy by water ballasting) appears on 204 US grants and 207 published applications in this corpus.
Search patents in B63G- Granted patents
- 204
- Published applications
- 207
- Assignees
- 130
- Inventors
- 464
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 1 | 3 |
| 2007 | 5 | 2 |
| 2008 | 0 | 3 |
| 2009 | 1 | 3 |
| 2010 | 1 | 1 |
| 2011 | 4 | 4 |
| 2012 | 4 | 8 |
| 2013 | 5 | 7 |
| 2014 | 5 | 4 |
| 2015 | 6 | 10 |
| 2016 | 7 | 12 |
| 2017 | 10 | 9 |
| 2018 | 13 | 15 |
| 2019 | 16 | 12 |
| 2020 | 12 | 12 |
| 2021 | 19 | 16 |
| 2022 | 15 | 10 |
| 2023 | 14 | 17 |
| 2024 | 16 | 18 |
| 2025 | 11 | 19 |
| 2026 | 12 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Power generation apparatus13 Aug 2026US 2026/0235099 A14Rivers Power Engineering PTY Ltd
- Controlling buoyancy of underwater device using fuel cells and propellers30 Jul 2026US 2026/0217349 A1University of Houston System
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Most cited
By later US patents
- Method of controlling operating depth of an electricity-generating device having a tethered water current-driven turbine111US 6,091,161 ADehlsen Associates, LLC · 2000
- Autonomous underwater vehicle for marine seismic surveys46US 9,090,319 B2Seabed Geosolutions B.V. · 2015
- Unmanned submersible vehicles and methods for operating the same in a body of liquid44US 8,418,642 B2iRobot Corporation · 2013
- Buoyancy control systems and methods for submersible objects38US 8,069,808 B1Alaska Native Technologies, LLC · 2011
- Submersible vehicles and methods for transiting the same in a body of liquid34US 8,127,704 B2iRobot Corporation · 2012