F03B 13/105
Bulb groups
Official title: {Bulb groups}
F03B13/105 (Bulb groups) appears on 60 US grants and 60 published applications in this corpus.
Search patents in F03B- Granted patents
- 60
- Published applications
- 60
- Assignees
- 44
- Inventors
- 141
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 4 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 4 |
| 2005 | 1 | 2 |
| 2006 | 4 | 1 |
| 2007 | 1 | 3 |
| 2008 | 2 | 5 |
| 2009 | 1 | 1 |
| 2010 | 2 | 3 |
| 2011 | 0 | 4 |
| 2012 | 5 | 4 |
| 2013 | 2 | 5 |
| 2014 | 5 | 7 |
| 2015 | 2 | 5 |
| 2016 | 4 | 5 |
| 2017 | 2 | 2 |
| 2018 | 0 | 1 |
| 2019 | 0 | 1 |
| 2020 | 1 | 3 |
| 2021 | 4 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 3 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Hydrokinetic chamber and chamber for generating hydrokinetic energy pertaining to the energy-generating module of a floating hydroelectric power plant26 Aug 2025US 12,398,526 B2Theophilo Ottoni—Estudos, De Projetos E Tecnologia Em Recursos Hidricos Ltda.
- Ducted bidirectional tidal current power station system13 Jul 2021US 11,060,500 B2HangZhou JiangHe Hydro-Electrical Sci. & Tech. Co.
- Double-regulated turbine, installation for converting hydraulic energy and process for the rehabilitation of a double-regulated turbine1 Jun 2021US 11,022,087 B2ALSTOM Renewable Technologies
- Power generation plant having a Kaplan, bulb, diagonal flow or propeller turbine4 May 2021US 10,995,727 B2ANDRITZ HYDRO GmbH
- Movable-blade operation system for hydraulic machine6 Apr 2021US 10,968,882 B2Kabushiki Kaisha Toshiba
- Hydrokinetic chamber and chamber for generating hydrokinetic energy pertaining to the energy-generating module of a floating hydroelectric power plant24 Oct 2024US 2024/0352697 A1Theophilo Ottoni – Estudos, Projetos E Tecnologia Em Recursos HíDricos Ltda.
- Water Flow Power Generation Device27 Jun 2024US 2024/0209829 A1Shenzhen University
- Energy storage system2 May 2024US 2024/0141859 A1
- Ocean energy power generation device and ocean energy power generation water leak-proof device thereof16 Jul 2020US 2020/0224632 A1Hangzhou Lindong New Energy Technology Inc.
- Ducted bidirectional tidal current power station system30 Apr 2020US 2020/0132041 A1HangZhou JiangHe Hydro-Electrical Science & Technology Co., Ltd.
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
- Underwater hydro-turbine for hydrogen production61US 6,104,097 A2000
- Hydraulic power plant47US 4,182,123 AFuji Electric Co., Ltd. · 1980
- Flow tubes for producing electric energy42US 3,980,894 A1976
- Dual type multiple stage, hydraulic turbine power generator including reaction type turbine with adjustable blades40US 6,441,508 B1Ebara International Corporation · 2002