F03B 15/02
Controlling: by varying liquid flow
Official title: by varying liquid flow
F03B15/02 (Controlling: by varying liquid flow) appears on 273 US grants and 279 published applications in this corpus.
Search patents in F03B- Granted patents
- 273
- Published applications
- 279
- Assignees
- 163
- Inventors
- 525
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 7 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 8 | 0 |
| 1985 | 4 | 0 |
| 1986 | 5 | 0 |
| 1987 | 5 | 0 |
| 1988 | 9 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 5 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 3 |
| 2003 | 2 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 2 |
| 2006 | 2 | 3 |
| 2007 | 1 | 4 |
| 2008 | 5 | 1 |
| 2009 | 0 | 4 |
| 2010 | 1 | 5 |
| 2011 | 3 | 7 |
| 2012 | 5 | 16 |
| 2013 | 7 | 13 |
| 2014 | 8 | 18 |
| 2015 | 7 | 18 |
| 2016 | 10 | 23 |
| 2017 | 18 | 19 |
| 2018 | 12 | 28 |
| 2019 | 18 | 19 |
| 2020 | 25 | 24 |
| 2021 | 21 | 15 |
| 2022 | 8 | 10 |
| 2023 | 11 | 12 |
| 2024 | 18 | 21 |
| 2025 | 17 | 7 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hydrokinetic turbine and array performance optimization by dynamic tuning2 Jun 2026US 12,644,430 B2Emrgy Inc.
- Ocean wave and tidal current energy conversion system26 May 2026US 12,637,999 B2
- Equalization tank assemblies for wastewater systems10 Feb 2026US 12,546,280 B2Trane International Inc.
- Energy-recovery turbine with pressure-release valve18 Nov 2025US 12,473,883 B2Corporation Bearstream Inc.
- Submerged fin for wave energy conversion28 Oct 2025US 12,454,934 B2Schlumberger Technology Corporation
- Automation and control system applied to energy generation systems in hydroelectric plants1 Oct 2026US 2026/0298193 A1Reivax AutomaçãO E Controle Ltda.
- Multi-input electrical energy storage system and method1 Oct 2026US 2026/0302802 A1
- Hydrokinetic turbine and array performance optimization by dynamic tuning24 Sep 2026US 2026/0286927 A1Emrgy Inc.
- Aquaculture net cleaner head controller10 Sep 2026US 2026/0262613 A1Lindgren-Pitman, Inc.
- Energy storage system27 Aug 2026US 2026/0251115 A1
Most cited
By later US patents
- System for converting the randomly variable energy of a natural fluid85US 4,149,092 ASociete Generale de Techniques et d'Etudes · 1979
- Variable speed pumping-up system76US 5,026,256 AHitachi, Ltd. · 1991
- Cushioned dual-action constant speed wave power generator62US 5,424,582 AElektra Power Industries, Inc. · 1995
- Waterwheel-driven generating unit57US 5,440,175 A1995
- Control system for run-of-river hydroelectric plant56US 4,674,279 AAcres International Corporation · 1987