US3098838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinyl ethyl ether-vinyl acetate graft copolymers
Assignee: Ingredion Inc
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Filing: 1959-12-22
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Granted: 1963-07-23
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Expires: 1979-12-22
Abstract
No abstract record available.
Inventors
- 👤 Albert I Goldberg
- 👤 Jasinski Victor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:07
CPC Classifications
C; C08; C08F; C08F261/00; C08F261/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A PROCESS FOR PREPARING A POLYVINYL EHTYL ETHERVINCY ACETATE GRAFT COPOLYMWER WHICH COMPRISES SOLUTION POLYMERIZING VINYL ACETATE WITH THE AID OF A POLYMERIZATION CATALYST IN THE PRESENCE OF THE HOMOPOLYMER OF VINYL ETHY ETHER, THE VINYL ACETATE AND THE HOMOPOLYMER OF VINYL, ETHYL ETHER BEING IN SOLUTION IN AN ORGANIC SOLVENT WHICH ALSO ACTS AS A SOLVENT FOR THE RESULTING GRAFT COPOLYMER, AND THE VINYL ACETATE AND HOMOPOLYMER OF VINYL ETHYL ETHER BEING IN THE FOLLOWING PROPORTIONS BY WEIGHT: VINYL ACETATE 95% TO 75% AND HOMOPOLYMER OF VINYL ETHYL ETHER 5% TO 25%.
Claim 2
Dependent Claim
93 words
A PROCESS FOR PREPARING A POLYVINYL EHTYL ETHERVINCY ACETATE GRAFT COPOLYMWER WHICH COMPRISES SOLUTION POLYMERIZING VINYL ACETATE WITH THE AID OF A POLYMERIZATION CATALYST IN THE PRESENCE OF THE HOMOPOLYMER OF VINYL ETHY ETHER, THE VINYL ACETATE AND THE HOMOPOLYMER OF VINYL, ETHYL ETHER BEING IN SOLUTION IN AN ORGANIC SOLVENT WHICH ALSO ACTS AS A SOLVENT FOR THE RESULTING GRAFT COPOLYMER, AND THE VINYL ACETATE AND HOMOPOLYMER OF VINYL ETHYL ETHER BEING IN THE FOLLOWING PROPORTIONS BY WEIGHT: VINYL ACETATE 95% TO 75% AND HOMOPOLYMER OF VINYL ETHYL ETHER 5% TO 25%.
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) | 1966-07-22 | 1967-01-21 | 1967-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-22 | 1971-01-21 | 1971-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-22 | 1975-01-21 | 1975-07-23 | $7700.00 | Window Closed / Lapsed |