US3408267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extractive distillation of ethanol followed by activated carbon treatment
Assignee: Millennium Petrochemicals Inc
•
Filing: 1966-01-17
•
Granted: 1968-10-29
•
Expires: 1986-01-17
Abstract
No abstract record available.
Inventors
- 👤 Franklyn D Miller
- 👤 Raymond A Kolbeson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:15
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74; C07C29/76; C07C29/80; C07C29/84
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1661403A
Cited
US2080111A
Cited
US2474170A
Cited
US2556248A
Cited
US2801210A
Cited
US2801209A
Cited
US2974175A
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 |