Patent US3716504A successfully refreshed from Google Patents.
US3716504A
Expired / Lapsed
US
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Paper coating compositions and products formed therefrom
Assignee: Air Products and Chemicals Inc
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Filing: 1965-03-31
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Granted: 1973-02-13
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Expires: 1985-03-31
Abstract
Abstract A COATING COMPOSITION EFFECTIVE TO DEPOSIT UPON A FIBROUS WEB, SUCH AS PAPER OR PAPERBOARD, A GLOSSY, BRIGHT COATING HAVING DESIRABLE "PICK" CHARACTERISTICS COMPRISES AN AQUEOUS SYNTHETIC POLYMER LATEX AND A MINERAL FILLER, THE LATEX CONTAINING DISPERSED VINYL ACETATE-ETHYLENE COPOLYMER OF 5 TO 40% PREFERABLY MORE THAN 15%, ETHYLENE CONTENT, AND CHARACTERIZED BY AN INTRINSIC VISCOSITY OF 1 TO 2.5 DECILITERS PER GRAM AS MEASURED IN BENEZE ZENE AT 30* C., THE DISPERSED COPOLYMER HAVING A PARTICLE SIZE OF 0.1U TO 0.25U, THE LATEX PERFERABLY HAVING A SOLIDS CONTENT OF 35 TO 70% OF COPOLYMER AND 100 PARTS OF FILLER PREFERABLY BEING PRESENT PER 5 TO 25 PARTS OF LATEX SOLIDS.
Inventors
- 👤 M Lindemann
- 👤 R Volpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:17
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/56; D21H19/60; C; C09; C09D; C09D123/00; C09D123/02; C09D123/04; C09D123/08; C09D131/00; C09D131/02; C09D131/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31768; Y10T428/31772; Y10T428/31775; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906; Y10T428/31971; Y10T428/31975
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) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |