US3373809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microemulsion oil recovery process
Assignee: ExxonMobil Upstream Research Co
•
Filing: 1965-11-15
•
Granted: 1968-03-19
•
Expires: 1985-11-15
Abstract
No abstract record available.
Inventors
- 👤 Jr Claude E Cooke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:08
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/584
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2742089A
Cited
US3131759A
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US3163214A
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US3266570A
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US3330344A
Cited
US3275075A
Cited
US3254714A
Cited
US3301325A
Cited
US3307628A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |