US3294164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Secondary recovery of petroleum with a preformed emulsion slug drive
Assignee: Sunoco Inc
•
Filing: 1963-08-12
•
Granted: 1966-12-27
•
Expires: 1983-08-12
Abstract
No abstract record available.
Inventors
- 👤 William C Hardy
- 👤 John C Shepard
- 👤 Keith L Reddick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:23
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/584
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2875831A
Cited
US2731414A
Cited
US3072185A
Cited
US2988142A
Cited
US3149669A
Cited
US3036631A
Cited
US3174542A
Cited
US3174543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |