F03D 9/11
Storing electrical energy
Official title: storing electrical energy
F03D9/11 (Storing electrical energy) appears on 654 US grants and 917 published applications in this corpus.
Search patents in F03D- Granted patents
- 654
- Published applications
- 917
- Assignees
- 310
- Inventors
- 1,424
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 9 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 5 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 5 | 1 |
| 2002 | 1 | 4 |
| 2003 | 4 | 8 |
| 2004 | 1 | 8 |
| 2005 | 9 | 14 |
| 2006 | 8 | 23 |
| 2007 | 15 | 25 |
| 2008 | 17 | 63 |
| 2009 | 22 | 45 |
| 2010 | 28 | 73 |
| 2011 | 28 | 94 |
| 2012 | 47 | 85 |
| 2013 | 56 | 40 |
| 2014 | 41 | 40 |
| 2015 | 30 | 49 |
| 2016 | 31 | 39 |
| 2017 | 40 | 31 |
| 2018 | 29 | 31 |
| 2019 | 24 | 36 |
| 2020 | 30 | 30 |
| 2021 | 26 | 26 |
| 2022 | 20 | 35 |
| 2023 | 22 | 28 |
| 2024 | 27 | 27 |
| 2025 | 35 | 32 |
| 2026 | 7 | 30 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Auxiliary power system and control for rural and/or off grid wind turbines1 Sep 2026US 12,723,568 B2Siemens Gamesa Renewable Energy A/S
- Auxiliary power supply11 Aug 2026US 12,704,112 B2Siemens Gamesa Renewable Energy A/S
- Land vehicle for transporting people and/or goods21 Jul 2026US 12,687,149 B2
- Antenna system, communication device, and communication system7 Apr 2026US 12,597,692 B2Huawei Technologies Co., Ltd.
- Wind power generation apparatus and method17 Mar 2026US 12,577,938 B2China Petroleum & Chemical Corporation
- Wind Power Generation Device8 Oct 2026US 2026/0309125 A1
- Wind-solar-wave synergistic dispatchable power generation devices1 Oct 2026US 2026/0298202 A1Guangdong University of Technology
- Battery arrangement for stand-alone wind turbine27 Aug 2026US 2026/0250870 A1Siemens Energy Global GmbH & Co. KG
- Power plant with vertical axis wind turbines13 Aug 2026US 2026/0235103 A1Energypier AG
- Electricity generating device13 Aug 2026US 2026/0235106 A1
Most cited
By later US patents
- Islanding-operation prevention apparatus, and dispersed power generation apparatus and power generation system using the same282US 5,686,766 ACanon Kabushiki Kaisha · 1997
- Scavenger energy converter system its new applications and its control systems239US 6,327,994 B12001
- Variable speed wind turbine generator with zero-sequence filter141US 5,798,632 AMidwest Research Institute · 1998
- Mobile power system138US 7,230,819 B2SkyBuilt Power, LLC · 2007
- Wind turbine generator for electrical powered vehicles125US 4,314,160 A1982