F03B 17/00
Machines or engines for liquids: other machines or engines
Official title: Other machines or engines
F03B17/00 (Machines or engines for liquids: other machines or engines) appears on 1,660 US grants and 2,198 published applications in this corpus.
Search patents in F03B- Granted patents
- 1,660
- Published applications
- 2,198
- Assignees
- 630
- Inventors
- 2,849
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 16 | 0 |
| 1978 | 11 | 0 |
| 1979 | 6 | 0 |
| 1980 | 17 | 0 |
| 1981 | 22 | 0 |
| 1982 | 11 | 0 |
| 1983 | 14 | 0 |
| 1984 | 9 | 0 |
| 1985 | 13 | 0 |
| 1986 | 8 | 0 |
| 1987 | 14 | 0 |
| 1988 | 13 | 0 |
| 1989 | 11 | 0 |
| 1990 | 4 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 7 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 9 | 0 |
| 1999 | 11 | 0 |
| 2000 | 12 | 0 |
| 2001 | 16 | 3 |
| 2002 | 13 | 17 |
| 2003 | 16 | 20 |
| 2004 | 15 | 21 |
| 2005 | 14 | 42 |
| 2006 | 27 | 48 |
| 2007 | 18 | 59 |
| 2008 | 28 | 74 |
| 2009 | 29 | 97 |
| 2010 | 43 | 151 |
| 2011 | 65 | 135 |
| 2012 | 68 | 117 |
| 2013 | 84 | 136 |
| 2014 | 95 | 126 |
| 2015 | 72 | 112 |
| 2016 | 69 | 93 |
| 2017 | 97 | 103 |
| 2018 | 60 | 125 |
| 2019 | 83 | 126 |
| 2020 | 94 | 95 |
| 2021 | 78 | 87 |
| 2022 | 51 | 88 |
| 2023 | 66 | 83 |
| 2024 | 85 | 96 |
| 2025 | 92 | 89 |
| 2026 | 37 | 55 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Buoyant compressed air energy storage25 Aug 2026US 12,716,400 B2Black & Veatch Corporation
- Horizontally-oriented conical-helical hydrokinetic turbine11 Aug 2026US 12,704,105 B2
- Energy transfer from a drum to a displacement element11 Aug 2026US 12,704,107 B2Honeywell International Inc.
- Rotating liquid filled wheel system21 Jul 2026US 12,687,148 B1
- Systems and methods for power distribution and harnessing of marine hydrokinetic energy14 Jul 2026US 12,680,528 B2Riahmedia Inc.
- Construction for cascade hydro power plant8 Oct 2026US 2026/0309120 A1
- Apparatus to convert hydrokinetic energy into electrical energy1 Oct 2026US 2026/0298194 A1
- Underwater anchoring devices, systems, and methods24 Sep 2026US 2026/0285446 A1Verterra Energy Inc.
- Self-adaptive hydropower plant17 Sep 2026US 2026/0275956 A1
- Mechanical energy generation system for sustainable clean energy17 Sep 2026US 2026/0275960 A1
Most cited
By later US patents
- River turbine145US 3,986,787 A1976
- Method of controlling operating depth of an electricity-generating device having a tethered water current-driven turbine111US 6,091,161 ADehlsen Associates, LLC · 2000
- River and tidal power harvester107US 7,492,054 B22009
- Underwater ducted turbine101US 7,471,009 B2Clean Current Power Systems Incorporated · 2008
- Portable water-powered electric generator100US 4,868,408 A1989