US3401747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of sealing fissures in earthen formations
Assignee: Schlumberger Technology Corp
•
Filing: 1967-03-13
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Granted: 1968-09-17
•
Expires: 1987-03-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Albert W Coulter
- 👤 Claude T Copeland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:11
CPC Classifications
C; C08; C08F; C08F299/00; C08F299/02; C08F299/026; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/1455; C08G59/1461; C08L; C08L63/00; C08L63/10; C09; C09K; C09K17/00; C09K17/14; C09K17/18; C09K17/20; C09K17/22; E; E02; E02F; E02F3/00; E02F3/04; E02F3/18; E02F3/22; E02F3/24; E02F3/241
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2670048A
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US2826562A
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US2946701A
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US3066112A
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US3170516A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |