US3056288A
Expired / Lapsed
US
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Method using a reversible solid-forming material to profile a subterranean formation
Assignee: Sinclair Research Inc
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Filing: 1959-07-06
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Granted: 1962-10-02
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Expires: 1979-07-06
Abstract
No abstract record available.
Inventors
- 👤 Robert O Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:56
CPC Classifications
E; E21; E21B; E21B49/00; E21B49/08; E21B49/087; C; C09; C09K; C09K8/00; C09K8/50; E21B47/00; E21B47/10; E21B47/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |