F15B 2201/42
Heat recuperators for isothermal compression and expansion
F15B2201/42 (Heat recuperators for isothermal compression and expansion) appears on 17 US grants and 17 published applications in this corpus.
Search patents in F15B- Granted patents
- 17
- Published applications
- 17
- Assignees
- 13
- Inventors
- 33
- Latest grant
- 16 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 2 |
| 2011 | 1 | 0 |
| 2012 | 2 | 1 |
| 2013 | 0 | 3 |
| 2014 | 1 | 5 |
| 2015 | 2 | 1 |
| 2016 | 3 | 1 |
| 2017 | 3 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Device, system and method for isothermal compression, constant-pressure power generation and physical energy storage16 Dec 2025US 12,497,941 B2Northwestern Polytechnical University
- Variable pressure vessel7 Jan 2020US 10,527,065 B2Isocurrent Energy Incorporated
- Plunger pressure accumulator19 Nov 2019US 10,480,538 B2Aalto University Foundation
- Device for fluid power recuperation20 Jun 2017US 9,683,787 B2
- Hydraulic motor-pump with fixed or variable displacement17 Jan 2017US 9,546,654 B2
- Device, system and method for isothermal compression, constant-pressure power generation and physical energy storage15 Aug 2024US 2024/0271590 A1Northwestern Polytechnical University
- Variable pressure vessel6 Dec 2018US 2018/0347595 A1Isocurrent Energy Incorporated
- Plunger pressure accumulator21 Sep 2017US 2017/0268539 A1Aalto University Foundation
- Device for fluid power recuperation15 Dec 2016US 2016/0363383 A9
- Compressed gas energy storage system3 Dec 2015US 2015/0345522 A1LightSail Energy, Inc.
Most cited
By later US patents
- Accumulator engine103US 5,579,640 AThe United States of America as represented by the Administrator of the Environmental Protection Agency · 1996
- System and method for rapid isothermal gas expansion and compression for energy storage86US 7,802,426 B2SustainX, Inc. · 2010
- System and method for rapid isothermal gas expansion and compression for energy storage22US 8,240,146 B1SustainX, Inc. · 2012
- Hydropneumatic accumulator with a compressible regenerator11US 8,201,582 B22012
- Compressed gas energy storage system11US 9,109,614 B1LightSail Energy, Inc. · 2015