Patent US3073752A successfully refreshed from Google Patents.
US3073752A
Expired / Lapsed
US
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Process for separating mixtures containing carbonyl compounds and corresponding alcohols
Assignee: Usines de Melle SA
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Filing: 1957-11-25
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Granted: 1963-01-15
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Expires: 1977-11-25
Abstract
No abstract record available.
Inventors
- 👤 Mention Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:58
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/74; C07C29/76; C07C29/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A PROCESS WHICH COMPRISES DISTILLING IN A COLUMN A MIXTURE CONSISITING ESSENTIALLY OF A CARONYL COMPOUND HAVING AT LEAST TWO CARBON ATOMS, THE CORRESPONDING ALCOHOL AND WATER, REMOVING THE MAJOR PART OF THE CARBONYL COMPOUND IN A SUBSTANTIALLY PURE STATE AT THE TOP OF THE COLUMN, WITHDRAWING WATER AT THE BASE OF THE COLUMN, WITHDRAWING FROM THE COLUMN AS A SIDE STREAM A MIXTURE OF ALCOHOL AND WATER IN AT LEAST AZEOTROPIC PROPORTIONS WITH A MINOR PROPORTION OF SAID CARBONYL COMPOUND WITH RESPECT TO THE ALCOHOL SO WITHDRAWN, FEEDING SAID WITHDRAWN ALCOHOL-WATER-CARBONYL COMPOUND MIXTURE TO THE HEAD PART OF A SECOND DISTILLING COLUMN, WITHDRAWING CARBONYL COMPOUND VAPOR FROM THE HEAD OF THE SECOND
Claim 2
Dependent Claim
113 words
A PROCESS WHICH COMPRISES DISTILLING IN A COLUMN A MIXTURE CONSISITING ESSENTIALLY OF A CARONYL COMPOUND HAVING AT LEAST TWO CARBON ATOMS, THE CORRESPONDING ALCOHOL AND WATER, REMOVING THE MAJOR PART OF THE CARBONYL COMPOUND IN A SUBSTANTIALLY PURE STATE AT THE TOP OF THE COLUMN, WITHDRAWING WATER AT THE BASE OF THE COLUMN, WITHDRAWING FROM THE COLUMN AS A SIDE STREAM A MIXTURE OF ALCOHOL AND WATER IN AT LEAST AZEOTROPIC PROPORTIONS WITH A MINOR PROPORTION OF SAID CARBONYL COMPOUND WITH RESPECT TO THE ALCOHOL SO WITHDRAWN, FEEDING SAID WITHDRAWN ALCOHOL-WATER-CARBONYL COMPOUND MIXTURE TO THE HEAD PART OF A SECOND DISTILLING COLUMN, WITHDRAWING CARBONYL COMPOUND VAPOR FROM THE HEAD OF THE SECOND
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |