H02J 15/20
Systems for storing electric energy specially adapted for power networks: using storage
Official title: using storage of pneumatic energy, e.g. compressed air energy storage [CAES]
H02J15/20 (Systems for storing electric energy specially adapted for power networks: using storage) appears on 174 US grants and 239 published applications in this corpus.
Search patents in H02J- Granted patents
- 174
- Published applications
- 239
- Assignees
- 85
- Inventors
- 296
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 4 |
| 2006 | 1 | 4 |
| 2007 | 1 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 4 |
| 2010 | 3 | 17 |
| 2011 | 9 | 23 |
| 2012 | 21 | 24 |
| 2013 | 22 | 24 |
| 2014 | 17 | 13 |
| 2015 | 3 | 5 |
| 2016 | 11 | 9 |
| 2017 | 4 | 7 |
| 2018 | 2 | 5 |
| 2019 | 8 | 14 |
| 2020 | 11 | 17 |
| 2021 | 8 | 15 |
| 2022 | 9 | 16 |
| 2023 | 7 | 10 |
| 2024 | 13 | 9 |
| 2025 | 12 | 13 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Heat exchange system to transfer waste heat from electrical load to compressed air energy storage system29 Sep 2026US 12,747,693 B1Brightnight Power LLC
- Use of renewable energy in methanol synthesis14 Jul 2026US 12,678,760 B2Sabic Global Technologies B.V.
- Moving and storing energy between utility's energy delivery networks26 May 2026US 12,640,564 B2Power Management Holdings (U.S.), Inc.
- Energy supply management system for a vehicle, method for determining the coverage of an energy requirement of a load unit of the energy supply management system, and computer program product10 Mar 2026US 12,570,226 B2KNORR-BREMSE Systeme fuer Nutzfahrzeuge GmbH
- Method for storing compressed air energy30 Dec 2025US 12,510,060 B2Toyo Engineering Corporation
- Energy recovery system and related method of recovering energy10 Sep 2026US 2026/0266267 A1Siemens Energy Global GmbH & Co. KG
- Power generation system and energy storage system23 Jul 2026US 2026/0210324 A1NTT, Inc.
- Use of renewable energy in ammonia synthesis23 Apr 2026US 2026/0108861 A1Sabic Global Technologies B.V.
- System and method for implementating a magnet battery29 Jan 2026US 2026/0031652 A1
- Energy storage with compressed gas using hydraulic transformers15 Jan 2026US 2026/0015987 A1Energy Internet Corporation
Most cited
By later US patents
- Compressed air energy storage method and system274US 5,537,822 AThe Israel Electric Corporation Ltd. · 1996
- Combination of supercritical wet combustion and compressed air energy storage112US 4,593,202 ADipac Associates · 1986
- Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange97US 8,065,874 B2Lightsale Energy, Inc. · 2011
- Compressed air energy storage system utilizing two-phase flow to facilitate heat exchange90US 8,240,142 B2LightSail Energy, Inc. · 2012
- Compressed gas system and method89US 4,849,648 AColumbia Energy Storage, Inc. · 1989