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US2909443A
Expired / Lapsed
US
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Process of making polyethylene film receptive to organic coating
Assignee: EIDP Inc
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Filing: 1953-09-29
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Granted: 1959-10-20
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Expires: 1973-09-29
Abstract
No abstract record available.
Inventors
- 👤 Leon E Wolinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:18
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/06; C08J7/043; C08J7/046; C08J7/048; C08J7/056; C08J2323/00; C08J2323/02; C08J2323/04; C08J2323/06; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/268
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A PROCESS FOR MAKING POLYETHYLENE FILM RECEPTIVE TO ORGANIC COATINGS WHICH COMPRISES EMBEDDING COLLOIDAL SILICA PARTICLES IN THE SURFACE OF THE PRE-FORMED FILM WHILE MAINTAINING THE POINTS OF EMBEDMENT ON THE FILM IN AN AMORPHOUS STATE, SAID PARTICLES HAVING THEIR GREATEST DIMENSION NO GREATER THAN ONE-HALF THE THICKNESS OF THE FILM AND NOT TO EXCEED 50 MICRONS, TO FORM A PRODUCT HAVING A DEGREE OF TRANSPARENCY AND A SURFACE TEXTURE SUBSTANTIALLY EQUIVALENT TO THE FILM PRIOR TO EMBEDMENT.
Claim 2
Dependent Claim
78 words
A PROCESS FOR MAKING POLYETHYLENE FILM RECEPTIVE TO ORGANIC COATINGS WHICH COMPRISES EMBEDDING COLLOIDAL SILICA PARTICLES IN THE SURFACE OF THE PRE-FORMED FILM WHILE MAINTAINING THE POINTS OF EMBEDMENT ON THE FILM IN AN AMORPHOUS STATE, SAID PARTICLES HAVING THEIR GREATEST DIMENSION NO GREATER THAN ONE-HALF THE THICKNESS OF THE FILM AND NOT TO EXCEED 50 MICRONS, TO FORM A PRODUCT HAVING A DEGREE OF TRANSPARENCY AND A SURFACE TEXTURE SUBSTANTIALLY EQUIVALENT TO THE FILM PRIOR TO EMBEDMENT.
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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) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |