US3600215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cast coating process
Assignee: Wyomissing Corp
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Filing: 1968-04-16
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Granted: 1971-08-17
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Expires: 1988-04-16
Abstract
Abstract A METHOD OF CAST COATING PAPER WITH AN AQUEOUS MINERAL CAST-COATING COMPOSITION CONTAINING CASEIN OR SOY BEAN PROTEIN AS BINDER WHEREIN THE COMPOSITION HAS A PH ABOVE 5 AND BELOW 4 AND A SOLIDS CONTENT OF FROM ABOUT 45 TO ABOUT 60% AND WHEREIN THE WET COATING IS PARTIALLY DRIED, WHILE THE COATED PAPER WEB IS MOVING AND SUPPORTED ON ITS UNCOATED SIDE, BY DIRECTING A UNIFORM JET STREAM OF AIR ONTO THE WET COATING IN A DIRECTION TOWARD THE COATING BUT OPPOSED TO THE DIRECTION OF TRAVEL OF THE PAPER WEB.
Inventors
- 👤 William C Mervine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:29
CPC Classifications
D; D21; D21H; D21H25/00; D21H25/08; D21H25/16; D21H5/00; D21H5/0005; D21H5/006; D21H5/0062; D21H5/007; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31765; Y10T428/31768; Y10T428/31772; Y10T428/31775; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31909; Y10T428/31924
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) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |