Patent US4935465A successfully refreshed from Google Patents.
US3645952A
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Composition for paper coating and product formed therefrom
Assignee: Air Products and Chemicals Inc
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Filing: 1965-03-31
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Granted: 1972-02-29
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Expires: 1985-03-31
Abstract
Abstract A COATING COMPOSITION EFFECTIVE TO DEPOSIT UPON A FIBROUS WEB, SUCH AS PAPER OR PAPER BOARD, A GLOSSY, BRIGHT COATING HAVING DESIRABLE "PICK" CHARACTERISTICS COMPRISES AN AQUEOUS SYNTHETIC POLYMER LATEX AND A MINERAL FILLER, THE LATEX CONTAINING DISPERSED VINYL ACETATE-ETHYLENEGLYCIDYL ACRYLATE INTERPOLYMER OF 5 TO 40%, PREFERABLY MORE THAN 15%, ETHYLENE CONTENT, THE DISPERSED COPOLYMER HAVING A PARTICLE SIZE OF 0.1U TO 0.25U, THE LATEX PREFERABLY HAVING A SOLIDS CONTENT OF 35 TO 70% OF INTERPOLYMER AND 100 PARTS OF FILLER PREFERABLY BEING PRESENT PER 5 TO 25 PARTS OF LATEX SOLIDS.
Inventors
- 👤 Martin K Lindemann
- 👤 Rocco P Volpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:45
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
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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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |