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Patent US3363690A successfully refreshed from Google Patents.
US3363690A
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Method and composition for treating subterranean formations
Assignee: Union Oil Company of California
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Filing: 1965-05-10
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Granted: 1968-01-16
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Expires: 1985-05-10
Abstract
No abstract record available.
Inventors
- 👤 Paul W Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:45
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/92
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3145187A
Cited
US3145773A
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US3089542A
Cited
US3259190A
Cited
US3149673A
Cited
US3193011A
Cited
US3257348A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |