Patent US3347756A successfully refreshed from Google Patents.
US3347756A
Expired / Lapsed
US
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Production of pure acetic acid from methyl vinyl ketone by distillation
Assignee: Distillers Co Yeast Ltd
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Filing: 1963-10-23
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Granted: 1967-10-17
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Expires: 1983-10-23
Abstract
No abstract record available.
Inventors
- 👤 Snell Ronald Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:10
CPC Classifications
C; C07; C07C; C07C29/00; C07C29/17; C07C29/175; C07C45/00; C07C45/78; C07C45/81; C07C45/82; C07C45/83; C07C45/85; C07C51/00; C07C51/42; C07C51/43; C07C51/44; C07C51/487
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
IN A PROCESS FOR THE RECOVERY OF PURE ACETIC ACID FROM ACETIC ACID CONTAINING MIXTURES OBTAINED FROM THE LIQUID PHASE OXIDATION OF PARAFFIN HYDROCARBONS WITH MOLECULAR OXYGEN, THE IPROVEMENT WHICH COMPRISES LIBERATING BY HEAT OR DISTILLATION A MIXTURE OF METHYL VINYL KETONE AND ACETIC ACID FROM THE RESULTANT OXIDATION PRODUCT WHICH CONTAINS METHYL VINYL KETONE CONDENSATION PRODUCT AND SEPARATING BY DISTILLATION THE METHYL VINYL KETONE FROM THE ACETIC ACID MIXTURE THEREWITH SUCH THAT THE TIME AND
Claim 2
Dependent Claim
76 words
IN A PROCESS FOR THE RECOVERY OF PURE ACETIC ACID FROM ACETIC ACID CONTAINING MIXTURES OBTAINED FROM THE LIQUID PHASE OXIDATION OF PARAFFIN HYDROCARBONS WITH MOLECULAR OXYGEN, THE IPROVEMENT WHICH COMPRISES LIBERATING BY HEAT OR DISTILLATION A MIXTURE OF METHYL VINYL KETONE AND ACETIC ACID FROM THE RESULTANT OXIDATION PRODUCT WHICH CONTAINS METHYL VINYL KETONE CONDENSATION PRODUCT AND SEPARATING BY DISTILLATION THE METHYL VINYL KETONE FROM THE ACETIC ACID MIXTURE THEREWITH SUCH THAT THE TIME AND
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |