US3487927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for separating water and oil
Assignee: Standard Oil Co
•
Filing: 1967-10-02
•
Granted: 1970-01-06
•
Expires: 1987-10-02
Abstract
No abstract record available.
Inventors
- 👤 Robert L Yahnke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:01
CPC Classifications
E; E02; E02B; E02B15/00; E02B15/04; E02B15/10; E02B15/104; B; B01; B01D; B01D17/00; B01D17/02; B01D17/0202; Y; Y02; Y02A; Y02A20/00; Y02A20/20; Y02A20/204
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1860819A
Cited
US2866827A
Cited
US2881127A
Cited
US2860973A
Cited
US3314540A
Cited
GB1026201A
Cited
US3344062A
Cited
US3334042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |