US3211688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinyl acetate plasticized with polyester
Assignee: US Filter Wallace and Tiernan Inc
•
Filing: 1961-04-20
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Granted: 1965-10-12
•
Expires: 1981-04-20
Abstract
No abstract record available.
Inventors
- 👤 Wilmer C Eisenhard
- 👤 Roderick B Judge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:33
CPC Classifications
C; C09; C09J; C09J131/00; C09J131/02; C09J131/04; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/20; C08G63/66; C08G63/668; C08G63/672; C08L; C08L31/00; C08L31/02; C08L31/04; C08L67/00; C08L67/02; C08L67/025; C09J167/00; C09J167/02; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A COMPOSITION OF MATTER COMPRISING POLYVINVYL ACETATE AND AS A PLASTICIZER FOR SAID POLYVINYL ACETATE A POLYESTER IN AN AMOUNT FROM ABOUT 10 TO ABOUT 60% BY WEIGHT BASED ON SAID POLYVINYL ACETATE PREPARED BY THE ESTERIFICATION REACTION OF A MIXTURE CONSISTING ESSENTIALLY OF DIGLYCOLIC ACID, PROPYLENE GLYCOL AND AN ALCOHOL SELECTED FROM THE GROUP CONSISTING OF ETHER ALCOHOLS HAVING THE FORMULA R1-OC2H4OH AND ETHER ALCOHOLS HAVING THE FORMULA R1-OC2H4OC2H4OH WHEREIN R1 IS AN ALIPHATIC HYDROCARBON RADICAL CONTAINING FROM 1 TO 4 CARBON ATOMS, SAID POLYESTER HAVING THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
90 words
A COMPOSITION OF MATTER COMPRISING POLYVINVYL ACETATE AND AS A PLASTICIZER FOR SAID POLYVINYL ACETATE A POLYESTER IN AN AMOUNT FROM ABOUT 10 TO ABOUT 60% BY WEIGHT BASED ON SAID POLYVINYL ACETATE PREPARED BY THE ESTERIFICATION REACTION OF A MIXTURE CONSISTING ESSENTIALLY OF DIGLYCOLIC ACID, PROPYLENE GLYCOL AND AN ALCOHOL SELECTED FROM THE GROUP CONSISTING OF ETHER ALCOHOLS HAVING THE FORMULA R1-OC2H4OH AND ETHER ALCOHOLS HAVING THE FORMULA R1-OC2H4OC2H4OH WHEREIN R1 IS AN ALIPHATIC HYDROCARBON RADICAL CONTAINING FROM 1 TO 4 CARBON ATOMS, SAID POLYESTER HAVING THE STRUCTURAL FORMULA
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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) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |