US3655608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper coating compositions and paper therewith
Assignee: Bergstrom Paper Co
•
Filing: 1969-01-07
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Granted: 1972-04-11
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Expires: 1989-01-07
Abstract
Abstract A PROCESS BY WHICH PAPER COATING PIGMENTS ARE TREATED WITH A HYDROXYL- OR HYDROGEN-REACTIVE ORGANIC CHEMICAL AND SUBSEQUENTLY COMBINED WITH A POLYMERIZABLE BINDER MATERIAL TO FORM A UNIFORM, HIGH-PIGMENT-CONTENT, THIXOTROPIC WATER-FREE COATING COMPOSITION TO BE APPLIED TO PAPER, FILM, OR WEB MATERIALS TO PRODUCE A SMOOTH COATED PRODUCT WITH SUPERIOR PROPERTIES, AND THE PRODUCT THEREOF.
Inventors
- 👤 Karl R Guenther Middletown
- 👤 Donald G Havekost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:31
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/44; D21H19/62; D21H19/38; D21H19/40; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31591; Y10T428/31609; Y10T428/31652; Y10T428/31663; Y10T428/31971; Y10T428/31993
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) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |