US2727871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resinous copolymer of vinyl acetate and a vinyl ester of a hydrogenated or dehydrogenated rosin acid
Assignee: Hercules Powder Co
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Filing: 1951-07-05
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Granted: 1955-12-20
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Expires: 1971-07-05
Abstract
No abstract record available.
Inventors
- 👤 Walter S Ropp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:55
CPC Classifications
C; C08; C08F; C08F18/00; C08F18/02; C08F18/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A COPOLYMER OF VINYL ACETATE AND A VINYL ESTER OF A CHEMICALLY STABILIZED ROSIN ACID, SAID CHEMICALLY STABILIZED ROSIN ACID BEING SELECTED FROM THE GROUP CONSISTING OF HYDROGENATED ROSIN ACIDS AND DEHYDROGENATED ROSIN ACIDS AND SAID CHEMICALLY STABILIZED ROSIN ACID CONTAINING NOT MORE THAN 10% OF RESIN ACIDS HAVIG THE CARBON SKELETON OF ABIETIC ACID AND HAVING TWO ETHYLENIC DOUBLE BONDS PER MOLECULE.
Claim 2
Dependent Claim
63 words
A COPOLYMER OF VINYL ACETATE AND A VINYL ESTER OF A CHEMICALLY STABILIZED ROSIN ACID, SAID CHEMICALLY STABILIZED ROSIN ACID BEING SELECTED FROM THE GROUP CONSISTING OF HYDROGENATED ROSIN ACIDS AND DEHYDROGENATED ROSIN ACIDS AND SAID CHEMICALLY STABILIZED ROSIN ACID CONTAINING NOT MORE THAN 10% OF RESIN ACIDS HAVIG THE CARBON SKELETON OF ABIETIC ACID AND HAVING TWO ETHYLENIC DOUBLE BONDS PER MOLECULE.
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) | 1958-12-19 | 1959-06-20 | 1959-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-19 | 1963-06-20 | 1963-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-19 | 1967-06-20 | 1967-12-20 | $7700.00 | Window Closed / Lapsed |