US2702254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of solvent treating a coated regenerated cellulose film
Assignee: Transparent Package Co
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Filing: 1952-03-25
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Granted: 1955-02-15
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Expires: 1972-03-25
Abstract
No abstract record available.
Inventors
- 👤 Laurence E Dowd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:28
CPC Classifications
A; A22; A22C; A22C13/00; A22C13/0013; C; C08; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/1455; C08G59/1461; C08G59/1472; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/046; C08J7/048; C09; C09D; C09D163/00; C09D163/10; C08J2301/00; C08J2301/06; C08J2301/08; C08J2301/22; C08J2301/24; C08J2463/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31855; Y10T428/3188
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A METHOD OF CONDITIONING REGENERATED CELLULOSE FILM HAVING A WAXY, WATERPROOF AND INK-REPELLENT SURFACE, SAID IMPART INK RECEPTIVENESS AND INK ADHESION THERETO, SAID FILM BEING COATED WITH A POLYMERIZED MIXTURE COMPRISING DRYING OIL FATTY ACID ESTERS OF THE REACTION PRODUCT OF EPICHLORHYDRIN AND BIS-PHENOL AND UP TO ABOUT 10 PERCENT BY WEIGHT BASED ON SAID POLYMERIZED MIXTURE OF A WAXY MATERIAL, COMPRISING CONTACTING THE SAID COATED FILM WITH A VOLATILE SOLVENT FOR THE WAXY MATERIAL AT A TEMPERATURE ABOVE THE MELTING POINT OF SAID WAXY MATERIAL, FOR A TIME SUFFICIENT TO REMOVE SUBSTANTIALLY ONLY THE SURFACE EXPOSED WAS, AND THEN REMOVING THE SOLVENT.
Claim 2
Independent Claim
103 words
A METHOD OF CONDITIONING REGENERATED CELLULOSE FILM HAVING A WAXY, WATERPROOF AND INK-REPELLENT SURFACE, SAID IMPART INK RECEPTIVENESS AND INK ADHESION THERETO, SAID FILM BEING COATED WITH A POLYMERIZED MIXTURE COMPRISING DRYING OIL FATTY ACID ESTERS OF THE REACTION PRODUCT OF EPICHLORHYDRIN AND BIS-PHENOL AND UP TO ABOUT 10 PERCENT BY WEIGHT BASED ON SAID POLYMERIZED MIXTURE OF A WAXY MATERIAL, COMPRISING CONTACTING THE SAID COATED FILM WITH A VOLATILE SOLVENT FOR THE WAXY MATERIAL AT A TEMPERATURE ABOVE THE MELTING POINT OF SAID WAXY MATERIAL, FOR A TIME SUFFICIENT TO REMOVE SUBSTANTIALLY ONLY THE SURFACE EXPOSED WAS, AND THEN REMOVING THE SOLVENT.
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) | 1958-02-14 | 1958-08-16 | 1959-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-14 | 1962-08-16 | 1963-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-14 | 1966-08-16 | 1967-02-15 | $7700.00 | Window Closed / Lapsed |