H02J 15/30
Systems for storing electric energy specially adapted for power networks: using storage
Official title: using storage of inertial or mechanical energy, e.g. using flywheels
H02J15/30 (Systems for storing electric energy specially adapted for power networks: using storage) appears on 99 US grants and 125 published applications in this corpus.
Search patents in H02J- Granted patents
- 99
- Published applications
- 125
- Assignees
- 89
- Inventors
- 230
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 3 | 3 |
| 2003 | 1 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 2 |
| 2008 | 2 | 4 |
| 2009 | 1 | 1 |
| 2010 | 1 | 0 |
| 2011 | 1 | 2 |
| 2012 | 0 | 4 |
| 2013 | 3 | 5 |
| 2014 | 2 | 2 |
| 2015 | 0 | 3 |
| 2016 | 3 | 6 |
| 2017 | 4 | 3 |
| 2018 | 4 | 1 |
| 2019 | 3 | 2 |
| 2020 | 4 | 7 |
| 2021 | 4 | 8 |
| 2022 | 5 | 14 |
| 2023 | 16 | 17 |
| 2024 | 13 | 16 |
| 2025 | 9 | 11 |
| 2026 | 3 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Electricity generation system comprising a water turbine with improved dynamic response2 Dec 2025US 12,489,314 B2Supergrid Institute
- Mechanical-energy storage unit19 Aug 2025US 12,395,010 B2Torus Inc.
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- Energy storage structure and rotary isolation switch27 Aug 2026US 2026/0251128 A1Chint Low Voltage Electrical Technology Co., Ltd.
- Power control device20 Aug 2026US 2026/0245153 A1Systemex Energies Inc.
- Microgrid9 Jul 2026US 2026/0196841 A1
- Method for determining capacity of energy storage apparatus for new energy support machine, and new energy support machine21 May 2026US 2026/0140154 A1
Most cited
By later US patents
- Uninterruptible power system with a flywheel-driven source of standby power117US 5,646,458 AAtlas Energy Systems, Inc. · 1997
- Method and apparatus for providing a continuous supply of electric power51US 6,463,738 B1Active Power, Inc. · 2002
- Spring operated current generator for supplying controlled electric current to a load40US 5,917,310 ABaylis Generators Limited · 1999
- Variable inertia energy storage system30US 4,926,107 AThe Boeing Company · 1990
- Bidirectional control system for energy flow in solar powered flywheel29US 4,649,287 AThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 1987