Patent US3560465A successfully refreshed from Google Patents.
US3560465A
Expired / Lapsed
US
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Preparation of soluble poly(vinyl esters) from high molecular weight acid chlorides
Assignee: Eastman Kodak Co
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Filing: 1969-04-01
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Granted: 1971-02-02
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Expires: 1989-04-01
Abstract
Abstract A PROCESS IS DESCRIBED FOR PREPARING SOLUBLE POLY(VINYL ESTERS) FROM POLY(VINYL ALCOHOL) AND HIGH MOLECULAR WEIGHT ACID CHLORIDES. THIS PROCEDURE IS ESPECIALLY USEFUL FOR PREPARING LIGHT-SENSITIVE POLYMERS.
Inventors
- 👤 George A Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:22
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/14; C08F2810/00; C08F2810/30
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |