US3407877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous fluid drive process
Assignee: Phillips Petroleum Co
•
Filing: 1967-04-28
•
Granted: 1968-10-29
•
Expires: 1987-04-28
Abstract
No abstract record available.
Inventors
- 👤 Robert R Harvey
- 👤 Michael M Vaclaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:50
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/584; C09K8/588
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3148730A
Cited
US3323589A
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US3326287A
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US3332486A
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US3346047A
Cited
US3362474A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |