B63H 1/02
Propulsive elements directly acting on water: of rotary type
Official title: of rotary type
B63H1/02 (Propulsive elements directly acting on water: of rotary type) appears on 1,110 US grants and 873 published applications in this corpus.
Search patents in B63H- Granted patents
- 1,110
- Published applications
- 873
- Assignees
- 412
- Inventors
- 1,592
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 20 | 0 |
| 1977 | 10 | 0 |
| 1978 | 8 | 0 |
| 1979 | 6 | 0 |
| 1980 | 13 | 0 |
| 1981 | 17 | 0 |
| 1982 | 6 | 0 |
| 1983 | 4 | 0 |
| 1984 | 9 | 0 |
| 1985 | 8 | 0 |
| 1986 | 8 | 0 |
| 1987 | 9 | 0 |
| 1988 | 8 | 0 |
| 1989 | 13 | 0 |
| 1990 | 17 | 0 |
| 1991 | 10 | 0 |
| 1992 | 13 | 0 |
| 1993 | 26 | 0 |
| 1994 | 19 | 0 |
| 1995 | 19 | 0 |
| 1996 | 16 | 0 |
| 1997 | 9 | 0 |
| 1998 | 22 | 0 |
| 1999 | 18 | 0 |
| 2000 | 17 | 0 |
| 2001 | 29 | 4 |
| 2002 | 21 | 19 |
| 2003 | 22 | 19 |
| 2004 | 20 | 20 |
| 2005 | 17 | 20 |
| 2006 | 24 | 29 |
| 2007 | 12 | 14 |
| 2008 | 13 | 22 |
| 2009 | 13 | 23 |
| 2010 | 10 | 17 |
| 2011 | 10 | 22 |
| 2012 | 13 | 26 |
| 2013 | 18 | 27 |
| 2014 | 21 | 32 |
| 2015 | 24 | 60 |
| 2016 | 41 | 25 |
| 2017 | 36 | 44 |
| 2018 | 36 | 42 |
| 2019 | 44 | 35 |
| 2020 | 39 | 49 |
| 2021 | 34 | 45 |
| 2022 | 54 | 91 |
| 2023 | 62 | 57 |
| 2024 | 77 | 62 |
| 2025 | 64 | 40 |
| 2026 | 31 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fluid propulsion system6 Oct 2026US 12,753,694 B23Silk, Inc.
- Cyclorotors29 Sep 2026US 12,747,013 B2GE Energy Power Conversion Technology Limited
- Amphibious vehicle systems22 Sep 2026US 12,741,493 B2
- Marine propeller with winglets and method of design thereof15 Sep 2026US 12,735,159 B1Brunswick Corporation
- Thermal energy storage systems for use in material processing1 Sep 2026US 12,723,524 B2Rondo Energy, Inc.
- Variable toroidal propeller1 Oct 2026US 2026/0296613 A1Alpraaz AB
- Cycloidal marine propulsion system1 Oct 2026US 2026/0296621 A1
- Propulsion system of boat1 Oct 2026US 2026/0296622 A1Honda Motor Co., Ltd.
- Electric outboard machine24 Sep 2026US 2026/0285462 A1Suzuki Motor Corporation
- Electric outboard machine24 Sep 2026US 2026/0285463 A1Suzuki Motor Corporation
Most cited
By later US patents
- Expandable impeller pump391US 7,393,181 B2Datascope Investment Corp. · 2008
- Marine propeller with breakaway hub297US 5,201,679 AAttwood Corporation · 1993
- Expandable impeller pump296US 7,927,068 B2The Penn State Research Foundation · 2011
- Expandable impeller pump197US 8,376,707 B2The Penn State Research Foundation · 2013
- Propeller hub assembly having overlap zone with optional removable exhaust ring and sized ventilation plugs140US 7,056,091 B22006