B63H 21/386
For handling lubrication liquids
Official title: {for handling lubrication liquids (in machines or engines in general F01M)}
B63H21/386 (For handling lubrication liquids) appears on 89 US grants and 70 published applications in this corpus.
Search patents in B63H- Granted patents
- 89
- Published applications
- 70
- Assignees
- 41
- Inventors
- 193
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 1 |
| 2002 | 6 | 2 |
| 2003 | 7 | 9 |
| 2004 | 7 | 4 |
| 2005 | 3 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 4 |
| 2012 | 0 | 2 |
| 2013 | 2 | 1 |
| 2014 | 4 | 2 |
| 2015 | 3 | 6 |
| 2016 | 1 | 1 |
| 2017 | 4 | 3 |
| 2018 | 2 | 1 |
| 2019 | 2 | 1 |
| 2020 | 2 | 1 |
| 2021 | 1 | 1 |
| 2022 | 1 | 5 |
| 2023 | 1 | 3 |
| 2024 | 6 | 10 |
| 2025 | 5 | 7 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Oil filtration and lubrication system for sealing system of azimuth thruster15 Sep 2026US 12,735,165 B2Steerprop Oy
- Multi-channel flow control system15 Sep 2026US 12,736,069 B2Industrial Technology Research Institute
- Marine motor assembly and method for changing lubricant in a marine motor assembly23 Jun 2026US 12,662,228 B2BRP US Inc.
- Propulsion unit for a marine vessel7 Apr 2026US 12,595,038 B2ABB AB
- Gearcase assemblies for marine drives having torpedo plugs9 Dec 2025US 12,491,977 B1Brunswick Corporation
- An electric saildrive25 Jun 2026US 2026/0175954 A1Searine A/S
- Multi-channel flow control system11 Jun 2026US 2026/0160277 A1Industrial Technology Research Institute
- Sail drive and ship5 Mar 2026US 2026/0062107 A1Yanmar Holdings Co., Ltd.
- Marine drive unit15 Jan 2026US 2026/0015072 A1AB Volvo Penta
- Lubrication mechanism6 Nov 2025US 2025/0340284 A1Honda Motor Co., Ltd.
Most cited
By later US patents
- Four-cycle engine for a small jet boat47US 5,846,102 AKawasaki Jukogyo Kabushiki Kaisha · 1998
- Engine lubricating system for watercraft41US 5,951,343 AYamaha Hatsudoki Kabushiki Kaisha · 1999
- Engine lubricating system for watercraft40US 5,839,930 AYamaha Hatsudoki Kabushiki Kaisha · 1998
- Apparatus and method for draining out the residual oil in a replaceable oil filter used in a marine engine for avoiding pollution to the environment when changing filters38US 5,366,400 A1994
- Oil cooler for watercraft38US 6,015,320 AYamaha Hatsudoki Kabushiki Kaisha · 2000