Patent US3393738A successfully refreshed from Google Patents.
US3393738A
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US
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Method for storing gas in subterranean formations
Assignee: Union Oil Company of California
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Filing: 1967-01-30
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Granted: 1968-07-23
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Expires: 1987-01-30
Abstract
No abstract record available.
Inventors
- 👤 George G Bernard
- 👤 Le Roy W Holm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:07
CPC Classifications
E; E21; E21B; E21B41/00; E21B41/005; E21B41/0057; E21B41/0064; B; B65; B65G; B65G5/00; Y; Y02; Y02C; Y02C20/00; Y02C20/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2127662A
Cited
US2866507A
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US3175614A
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US3207218A
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US3306354A
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US3330352A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |