US3481720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for the distillation of solids
Assignee: Sunoco Inc
•
Filing: 1966-04-29
•
Granted: 1969-12-02
•
Expires: 1986-04-29
Abstract
No abstract record available.
Inventors
- 👤 John D Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:04
CPC Classifications
C; C10; C10B; C10B1/00; C10B1/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2482187A
Cited
US2725348A
Cited
US2723226A
Cited
US2807529A
Cited
US2832725A
Cited
US2840462A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-01 | 1973-06-02 | 1973-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-01 | 1977-06-02 | 1977-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-01 | 1981-06-02 | 1981-12-02 | $7700.00 | Window Closed / Lapsed |