Patent US3636087A successfully refreshed from Google Patents.
US3636087A
Expired / Lapsed
US
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Vinyl acetate recovery process
Assignee: Atlantic Richfield Co
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Filing: 1966-09-12
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Granted: 1972-01-18
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Expires: 1986-09-12
Abstract
Abstract THE SOLVENT EXTRACTION OF VINYL ACETATE FROM A REACTION PRODUCT MIXTURE INCLUDING VINYL ACETATE, ACETIC ACID, AND WATER INCLUDING THE STEP OF FREEZING THE WATER AND ACETIC ACID PRIOR TO EXTRACTION AND THE RECIRCULATION OF THE EXTRACTED REACTION PRODUCT MIXTURE FOR REUSE IS DISCLOSED.
Inventors
- 👤 Frederick F Caserio Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:35
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/04; C07C67/05; C07C67/055; C07C67/48; C07C67/58
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |