Patent US2882255A successfully refreshed from Google Patents.
US2882255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyester composition and a vinyl comprising pyrrolidone polymer and method of preparing same
Assignee: Eastman Kodak Co
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Filing: 1955-07-20
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Granted: 1959-04-14
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Expires: 1975-07-20
Abstract
No abstract record available.
Inventors
- 👤 John R Caldwell
- 👤 Gilkey Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:34
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A RESINOUS COMPOSITION COMPRISIING A MIXTURE OF (A) FROM ABOUT 95 TO ABOUT 60 PERCENT BY WEIGHT OF A HIGH MELTING, HIGHLY POLYMERIC LINEAR POLYESTER OF AT LEAST ONE DICARBOXYLIC ACID WHICH OF A MAJOR PROPORTION SELECTED FROM THE GROUP CONSISTING OF TEREPHTHATIC ACID, 4,4''-SULFONYLDIBENZOIC ACID, 4,4''-DIPHENIC ACID, 1,2-DI(PCARBOXYPHENOXY) ETHANE AND 1,2-DI(P-CARBOXYPHENYL) ETHANE AND A GLYCOL CONTAINING FROM 2 TO 10 CARBON ATOMS, WHICH POLYSTER IS CAPABLE OF BEING FORMED INTO ORIENTED FILMS AND FIBRES, AND (B) FROM ABOUT 5% TO ABOUT 40% BY WEIGHT OF AN ETHENIOD POLYMER OF N-VINYLPYRROLIDONE, CONTAINING AT LEAST 40% BY WEIGHT OF N-VINYLPYRROLIDONE, WHICH RESINOUS COMPOSITION IS CAPABLE OF BEING FORMED INTO ORIENTED FIBRES HAVING A MINIUM MOISTURE REGAIN AT 65% RELATIVE HUMIDITY OF ABOUT 3.5%.
Claim 2
Dependent Claim
122 words
A RESINOUS COMPOSITION COMPRISIING A MIXTURE OF (A) FROM ABOUT 95 TO ABOUT 60 PERCENT BY WEIGHT OF A HIGH MELTING, HIGHLY POLYMERIC LINEAR POLYESTER OF AT LEAST ONE DICARBOXYLIC ACID WHICH OF A MAJOR PROPORTION SELECTED FROM THE GROUP CONSISTING OF TEREPHTHATIC ACID, 4,4''-SULFONYLDIBENZOIC ACID, 4,4''-DIPHENIC ACID, 1,2-DI(PCARBOXYPHENOXY) ETHANE AND 1,2-DI(P-CARBOXYPHENYL) ETHANE AND A GLYCOL CONTAINING FROM 2 TO 10 CARBON ATOMS, WHICH POLYSTER IS CAPABLE OF BEING FORMED INTO ORIENTED FILMS AND FIBRES, AND (B) FROM ABOUT 5% TO ABOUT 40% BY WEIGHT OF AN ETHENIOD POLYMER OF N-VINYLPYRROLIDONE, CONTAINING AT LEAST 40% BY WEIGHT OF N-VINYLPYRROLIDONE, WHICH RESINOUS COMPOSITION IS CAPABLE OF BEING FORMED INTO ORIENTED FIBRES HAVING A MINIUM MOISTURE REGAIN AT 65% RELATIVE HUMIDITY OF ABOUT 3.5%.
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) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |