US3404186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of ethanol from a methyl ethyl ketone-ethyl acetate fraction such as produced by hydrocarbon oxidation
Assignee: Celanese Corp
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Filing: 1966-02-07
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Granted: 1968-10-01
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Expires: 1986-02-07
Abstract
No abstract record available.
Inventors
- 👤 Walton W Bailey
- 👤 Edward P Maglaughlin
- 👤 William H Nichols
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:28
CPC Classifications
C; C07; C07C; C07C27/00; C07C27/10; C07C29/00; C07C29/74; C07C29/76; C07C29/86; C07C45/00; C07C45/78; C07C45/85
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA501374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-01 | 1972-04-01 | 1972-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-01 | 1976-04-01 | 1976-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-01 | 1980-04-01 | 1980-10-01 | $7700.00 | Window Closed / Lapsed |