Patent US3136657A successfully refreshed from Google Patents.
US3136657A
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Polyvinyl alcohol film coated with vinylidene chloride-vinyl chloride copolymer
Assignee: Airco Inc
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Filing: 1962-02-15
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Granted: 1964-06-09
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Expires: 1982-02-15
Abstract
No abstract record available.
Inventors
- 👤 Daniel S Dixler
- 👤 Robert A Eodice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:43
CPC Classifications
C; C09; C09D; C09D127/00; C09D127/02; C09D127/04; C09D127/08; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/048; C08J7/052; C09D129/00; C08J2329/00; C08J2329/02; C08J2329/04; C08J2427/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31928
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
90 words
A PROCESS WHICH COMPRISES DIRECTLY APPLYING TO A POLYVINYL ALCOHOL BASE FILM A SOLUTION OF A COPOLYMER OF ABOUT 50 TO 75% VINYLIDENE CHLORIDE AND 25 TO 50% VINYL CHLORIDE AND A TERPOLYMER OF ABOUT 75 TO 94.5% VINYL CHLORIDE, 5 TO 24.5% VINYL ACETATE, AND 0.5 TO 5% OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ETHYLENCIALLY UNSATURATED ALIPHATIC CARBOXYLIC ACIDS AND ANHYDRIDES THEREOF IN AN INERT ORGANIC SOLVENT, THE VINYLIDENE CHLORIDE-VINYL CHLORIDE COPOLYMER CONSTITUTING FROM ABOUT 90 TO 95% OF THE TOTAL SOLIDS CONTENT JOF SAID SOLUTION.
References Cited (Backward Citations)
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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) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |