Patent US2977246A successfully refreshed from Google Patents.
US2977246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for coating film
Assignee: EIDP Inc
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Filing: 1958-06-03
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Granted: 1961-03-28
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Expires: 1978-06-03
Abstract
No abstract record available.
Inventors
- 👤 Fisher John Richard
- 👤 Johnstone Hugh Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:25
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/048; C08J7/052; C08J2301/00; C08J2301/06; C08J2427/00; C08J2427/02; C08J2427/04; C08J2427/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PROCESS FOR COATING REGENERATED CELLULOSE FILM WHICH COMPRISES APPLYING TO IN REGENERATED CELLULOSE FILM A WATER-SOLUBLE, PARTIALLY CONDENSED THEREMOSETTING RESIN; THEREAFTER COATING THE RESULTING FILM WITH A COMPOSITION COMPRISING IN VOLATILE LIQUID MEDIUM A VINYLIDENE CHLORIDE COPOLYMER AND FROM ABOUT 2% TO ABOUT 10% BY WEIGHT, BASED ON THE WEIGHT OF COPOLYMER, OF MALEIC ANHYDRIDE; AND DRYING THE COATED FILM TO REMOVE THE VOLATILE LIQUID AND COMPLETE CONDENSATION OF SAID RESIN TO THE THERMOSET STAGE.
Claim 2
Dependent Claim
76 words
A PROCESS FOR COATING REGENERATED CELLULOSE FILM WHICH COMPRISES APPLYING TO IN REGENERATED CELLULOSE FILM A WATER-SOLUBLE, PARTIALLY CONDENSED THEREMOSETTING RESIN; THEREAFTER COATING THE RESULTING FILM WITH A COMPOSITION COMPRISING IN VOLATILE LIQUID MEDIUM A VINYLIDENE CHLORIDE COPOLYMER AND FROM ABOUT 2% TO ABOUT 10% BY WEIGHT, BASED ON THE WEIGHT OF COPOLYMER, OF MALEIC ANHYDRIDE; AND DRYING THE COATED FILM TO REMOVE THE VOLATILE LIQUID AND COMPLETE CONDENSATION OF SAID RESIN TO THE THERMOSET STAGE.
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) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |