Patent US2824023A successfully refreshed from Google Patents.
US2824023A
Expired / Lapsed
US
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Process of sizing films with polyvinylacetate and starch composition
Assignee: EIDP Inc
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Filing: 1955-12-13
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Granted: 1958-02-18
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Expires: 1975-12-13
Abstract
No abstract record available.
Inventors
- 👤 Banigan Thomas Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:04
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/046; C08J7/052; C08J2431/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
THE PROCESS WHICH COMPRISES SPRAYING THE SURFACES OF FLEXIBLE, NONFIBROUS FILMS OF ORGANIC, POLYMERIC, FILMFORMING SUBSTANCES WITH AN AQUEOUS DISPERSION OF (1) FROM 0.5% TO 1.0% BY WEIGHT, BASED ON THE TOTAL WEIGHT OF THE DISPERSION, OF PARTICLES OF POLYVINYL ACETATE AT LEAST 25%, BY WEIGHT, OF WHICH HAVE MAXIMUM PARTICLE DIAMETERS WITHIN THE RANGE OF 0.5-1 MICRONS, THE REMAINING PARTICLES OF POLYVINYL ACETATE HAVING MAXIMUM PARTICLE DIAMETERS OF FROM 1-30 MICRONS, AND (2) FROM 0.25% TO 1.0%, BY WEIGHT OF STARCH PARTICLES, HAVING MAXIMUM DIAMETERS OF NOT MORE THAN 30 MICRONS, AND THEREAFTER DRYING THE SPRAYED FILM AT AN ELEVATED TEMPERATURE SUFFICIENT TO SOFTEN THE POLYVINYL ACETATE.
Claim 2
Dependent Claim
108 words
THE PROCESS WHICH COMPRISES SPRAYING THE SURFACES OF FLEXIBLE, NONFIBROUS FILMS OF ORGANIC, POLYMERIC, FILMFORMING SUBSTANCES WITH AN AQUEOUS DISPERSION OF (1) FROM 0.5% TO 1.0% BY WEIGHT, BASED ON THE TOTAL WEIGHT OF THE DISPERSION, OF PARTICLES OF POLYVINYL ACETATE AT LEAST 25%, BY WEIGHT, OF WHICH HAVE MAXIMUM PARTICLE DIAMETERS WITHIN THE RANGE OF 0.5-1 MICRONS, THE REMAINING PARTICLES OF POLYVINYL ACETATE HAVING MAXIMUM PARTICLE DIAMETERS OF FROM 1-30 MICRONS, AND (2) FROM 0.25% TO 1.0%, BY WEIGHT OF STARCH PARTICLES, HAVING MAXIMUM DIAMETERS OF NOT MORE THAN 30 MICRONS, AND THEREAFTER DRYING THE SPRAYED FILM AT AN ELEVATED TEMPERATURE SUFFICIENT TO SOFTEN THE POLYVINYL ACETATE.
References Cited (Backward Citations)
GB686492A
Cited
US2653113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |