F17C 2270/0149
By digging cavities
Official title: by digging cavities
F17C2270/0149 (By digging cavities) appears on 52 US grants and 71 published applications in this corpus.
Search patents in F17C- Granted patents
- 52
- Published applications
- 71
- Assignees
- 36
- Inventors
- 107
- Latest grant
- 2 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 2 |
| 2004 | 2 | 4 |
| 2005 | 5 | 3 |
| 2006 | 1 | 5 |
| 2007 | 1 | 1 |
| 2008 | 3 | 2 |
| 2009 | 1 | 4 |
| 2010 | 1 | 1 |
| 2011 | 0 | 3 |
| 2012 | 1 | 0 |
| 2013 | 1 | 1 |
| 2014 | 1 | 6 |
| 2015 | 2 | 8 |
| 2016 | 6 | 10 |
| 2017 | 3 | 2 |
| 2018 | 1 | 0 |
| 2019 | 7 | 0 |
| 2020 | 1 | 1 |
| 2021 | 1 | 2 |
| 2022 | 3 | 2 |
| 2023 | 2 | 3 |
| 2024 | 0 | 4 |
| 2025 | 2 | 5 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method and process for storing liquid and gaseous fluids under pressure in a vertical subsurface vessel2 Sep 2025US 12,404,972 B2
- Thermal storage in pressurized fluid for compressed air energy storage systems11 Feb 2025US 12,222,068 B2Hydrostor Inc.
- Thermal storage in pressurized fluid for compressed air energy storage systems21 Nov 2023US 11,821,584 B2Hydrostor Inc.
- Thermal storage in pressurized fluid for compressed air energy storage systems9 May 2023US 11,644,150 B2Hydrostor Inc.
- Underground hydrogen storage vessel29 Nov 2022US 11,512,812 B2Energia de Septiembre LLC
- Electric field-enhanced underground hydrogen storage system and method17 Sep 2026US 2026/0276147 A1China University of Petroleum (East China)
- Underground Gas Storage Device for Compressed Air Energy Storage and Construction Method Thereof2 Jul 2026US 2026/0185662 A1Shanghai Investigation, Design & Research Institute Co., Ltd.
- Methods of storing hydrogen in salt caverns using fluid derivatives25 Dec 2025US 2025/0388405 A1Saudi Arabian Oil Company
- Storage and reuse of hydrogen and oxygen produced by green energy in groundwater6 Nov 2025US 2025/0341280 A1
- System and method for compressing and storing gas6 Nov 2025US 2025/0341281 A1
Most cited
By later US patents
- Compressed-air storage installation100US 4,147,204 ABBC Brown, Boveri & Company, Limited · 1979
- Safety device for underground storage of liquefied gas49US 4,417,829 ASociete Francaise de Stockage Geologique "Goestock" · 1983
- System for compressed gas energy storage35US 9,803,803 B1Northwest Natural Gas Company · 2017
- Method and apparatus for warming and storage of cold fluids33US 6,848,502 B2Conversion Gas Imports, L.P. · 2005
- Liquid displacement shuttle system and method30US 7,219,682 B2SeaOne Maritime Corp. · 2007