B63H 3/08
Fluid
Official title: fluid
B63H3/08 (Fluid) appears on 46 US grants and 21 published applications in this corpus.
Search patents in B63H- Granted patents
- 46
- Published applications
- 21
- Assignees
- 29
- Inventors
- 74
- Latest grant
- 15 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 5 | 0 |
| 2002 | 3 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 2 |
| 2011 | 1 | 3 |
| 2012 | 0 | 0 |
| 2013 | 3 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 2 | 2 |
| 2019 | 0 | 3 |
| 2020 | 4 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 2 |
| 2024 | 1 | 1 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Electrically controllable pitch propeller system for maritime crafts15 Apr 2025US 12,275,514 B1Rolls-Royce Marine North America Inc.
- Variable-pitch propeller having optimal hub-to-tip diameter ratio3 Dec 2024US 12,157,550 B2Hyundai Heavy Industries Co., Ltd.
- Control apparatus for a hydraulic variable-pitch propeller and propeller unit comprising a control apparatus of this kind12 Oct 2021US 11,143,200 B2MT-Propeller Entwicklung GmbH
- Metering of oil flow to engine propeller10 Nov 2020US 10,830,391 B2Pratt & Whitney Canada Corp.
- Method for filling a nautical hydraulic steering system8 Sep 2020US 10,766,585 B1Outboard Specialty Tools, LLC
- Electrically controllable pitch propeller system for maritime crafts27 Mar 2025US 2025/0100663 A1Rolls-Royce Marine North America Inc.
- Methods and apparatus to control propeller pitch in dual acting propellers31 Oct 2024US 2024/0359793 A1GE Avio S. r. l.
- Variable-pitch propeller having optimal hub-to-tip diameter ratio7 Sep 2023US 2023/0278685 A1Hyundai Heavy Industries Co., Ltd.
- Propeller assembly having a pump unit8 Jun 2023US 2023/0174220 A1MT-Propeller Entwicklung GmbH
- Method for Filling a Nautical Hydraulic Steering System24 Sep 2020US 2020/0298951 A1Outboard Specialty Tools, LLC
Most cited
By later US patents
- Actuation system for a controllable pitch propeller51US 6,811,376 B2Hamilton Sundstrand Corporation · 2004
- Feathering controllable pitch propeller19US 4,028,004 ALips Corporation · 1977
- Propeller blade pitch control system19US 8,439,640 B2Hamilton Sundstrand Corporation · 2013
- Controllable pitch propeller with a fail safe increased pitch movement17US 6,340,290 B12002
- Variable propeller system incorporating a forward transfer bearing15US 4,893,989 AUnited Technologies Corporation · 1990