US3704157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated article and method of making same
Assignee: EIDP Inc
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Filing: 1970-11-23
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Granted: 1972-11-28
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Expires: 1990-11-23
Abstract
Abstract A SHEET MATERIAL HAVING HEAT SEAL PROPERTIES INCLUDING IMPROVED HOT TACK IS PROVIDED BY COATING A PAPER SHEET SUBSTRATE WITH A MIXTURE COMPRISING (A) A COPOLYMER OF ETHYLENE AND A VINYL ALKANOATE AND FROM 0 TO ABOUT 10% OF AN ALPHA, BETA-ETHYLENICALLY UNSATURATED CARBOXYLIC ACID, AND (B) A COPOLYMER OF ETHYLENE AND AN ALPHA, BETAETHYLENICALLY UNSATURATED CARBOXYLIC ACID IN WHICH THE CARBOXYLIC ACID GROUPS ARE NEUTRALIZED TO A PREDETERMINED EXTENT, AND, IN THE PREFERRED EMBODIMENT (C) WAX. A METHOD FOR MAKING THE SHEET MATERIAL IS ALSO PROVIDED UTILIZING AN AQUEOUS DISPERSION OF THE STATED MIXTURE HAVING A PH OF AT LEAST 9 AND PREFERABLY FROM ABOUT 10 TO ABOUT 11.
Inventors
- 👤 John William Mcdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:45
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/20; C09J7/21; C09J7/30; C09J7/35; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/2835; Y10T428/2852; Y10T428/2878; Y10T428/2891
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-28 | 1976-05-29 | 1976-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-28 | 1980-05-29 | 1980-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-28 | 1984-05-29 | 1984-11-28 | $7700.00 | Window Closed / Lapsed |