US3477511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the recovery of petroleum using soluble oils
Assignee: Marathon Oil Co
•
Filing: 1968-09-13
•
Granted: 1969-11-11
•
Expires: 1988-09-13
Abstract
No abstract record available.
Inventors
- 👤 Stanley C Jones
- 👤 Laurence R Sanders Jr
- 👤 William C Tosch
- 👤 Charles B Wenger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:56
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/584
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3126952A
Cited
US2331594A
Cited
US3131759A
Cited
US3082822A
Cited
US3163214A
Cited
US3254714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |