F03B 15/14
By or of water level
Official title: by or of water level
F03B15/14 (By or of water level) appears on 31 US grants and 31 published applications in this corpus.
Search patents in F03B- Granted patents
- 31
- Published applications
- 31
- Assignees
- 23
- Inventors
- 71
- Latest grant
- 31 Dec 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 2 |
| 2013 | 1 | 1 |
| 2014 | 1 | 3 |
| 2015 | 0 | 3 |
| 2016 | 3 | 4 |
| 2017 | 3 | 3 |
| 2018 | 2 | 4 |
| 2019 | 1 | 2 |
| 2020 | 4 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
| 2024 | 2 | 2 |
| 2025 | 0 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Modular precast pumped storage hydro system for power generation31 Dec 2024US 12,180,665 B2W.L. French Hydropower Holdings LLC
- Method and device for determining suction height of variable speed units1 Oct 2024US 12,104,566 B2China Three Gorges Corporation
- Wave power generation apparatus5 Sep 2023US 11,746,738 B2Ingine, Inc.
- Method for stabilizing the rotation speed of a hydraulic machine with S-characteristics and installation for converting hydraulic energy into electrical energy25 Jan 2022US 11,231,006 B2
- System for energy storage and recovery17 Nov 2020US 10,837,360 B2Maxim Raskin
- Energy storage system27 Aug 2026US 2026/0251115 A1
- Modular precast pumped storage hydro system for power generation19 Jun 2025US 2025/0198105 A1W.L. French Hydropower Holdings LLC
- Modular precast pumped storage hydro system for power generation4 Jul 2024US 2024/0218623 A1W.L. French Hydropower Holdings LLC
- Method and device for determining suction height of variable speed units4 Jan 2024US 2024/0003327 A1China Three Gorges Corporation
- Wave power generation apparatus27 Jan 2022US 2022/0025841 A1Ingine, Inc.
Most cited
By later US patents
- Control system for run-of-river hydroelectric plant56US 4,674,279 AAcres International Corporation · 1987
- Liquid level control system and method of operating the same46US 4,772,157 A1988
- Micro-hydroelectric power plant37US 4,629,904 A1986
- Control system for hydroelectric power station system27US 4,109,160 AHitachi, Ltd. · 1978
- Method and apparatus for monitoring hydro turbine plants24US 4,683,718 AITT Industries, Inc. · 1987