E21D 13/00
Large underground chambers
Official title: Large underground chambers; Methods or apparatus for making them (lining E21D11/00)
E21D13/00 (Large underground chambers) appears on 56 US grants and 41 published applications in this corpus.
Search patents in E21D- Granted patents
- 56
- Published applications
- 41
- Assignees
- 39
- Inventors
- 140
- Latest grant
- 9 Apr 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 3 |
| 2015 | 1 | 6 |
| 2016 | 1 | 4 |
| 2017 | 5 | 3 |
| 2018 | 6 | 8 |
| 2019 | 6 | 6 |
| 2020 | 2 | 2 |
| 2021 | 3 | 2 |
| 2022 | 2 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
| 2025 | 0 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Underground storage system with V shaped support legs9 Apr 2024US 11,952,767 B2Bio Clean Environmental Services, Inc.
- Deep human-made cavern construction24 May 2022US 11,339,611 B2
- Underground storage system with V shaped support legs11 Jan 2022US 11,220,815 B2Bio Clean Environmental Services, Inc.
- Method and system for selecting and using a salt cavern to store very pure hydrogen23 Nov 2021US 11,180,318 B1Air Liquide Large Industries U.S. LP
- Method for storing very high purity hydrogen in a salt cavern9 Nov 2021US 11,167,927 B1Air Liquide Large Industries U.S. LP
- Graded underground pumped-storage hydropower in coal mine, construction and using methods12 Mar 2026US 2026/0071604 A1Taiyuan University of Technology
- System and method for compressing and storing gas6 Nov 2025US 2025/0341281 A1
- Underground storage system with v shaped support legs17 Oct 2024US 2024/0344315 A1Bio Clean Environmental Services, Inc.
- Underground storage system with v shaped support legs28 Apr 2022US 2022/0127834 A1Bio Clean Environmental Services, Inc.
- Deep human-made cavern construction28 Jan 2021US 2021/0025241 A1
Most cited
By later US patents
- Cavity positioning tool and method28US 6,412,556 B1CDX Gas, LLC · 2002
- System for the storage of radioactive material in rock22US 4,192,629 A1980
- Method of excavating rock caverns by blasting21US 4,601,518 AJCC Johnson Construction Company AB · 1986
- Method for displacing large blocks of earth17US 4,230,368 A1980
- Rock cavity14US 4,708,523 ABoliden Aktiebolag · 1987