US3702779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating of webs by freeze-drying and products therefrom
Assignee: Ethyl Corp
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Filing: 1970-04-21
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Granted: 1972-11-14
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Expires: 1990-04-21
Abstract
Abstract COATED PAPER IS PRODUCED BY APPLYING A COMPOSITION COMPRISING A POLYMERIC MATERIAL WITH OR WITHOUT ADDED PIGMENTS DISPERSED IN A LIQUID VEHICLE, FREEZING THE COATING, SUBJECTING THE FROZEN COATING TO A VACUUM TO REMOVE THE MAJORITY OF THE LIQUID VEHICLE, AND RETURNING THE DRIED OR PARTIALLY DRIED COATING ON THE WEB TO AMBIENT TEMPERATURE.
Inventors
- 👤 Thomas A Fadner
- 👤 Karl V Kraske
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:15
CPC Classifications
D; D21; D21H; D21H25/00; D21H25/04; D21H25/06; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31768; Y10T428/31772; Y10T428/31775; Y10T428/31855; Y10T428/3188; Y10T428/31942; Y10T428/31949; Y10T428/31964; 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) | 1975-11-14 | 1976-05-15 | 1976-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-14 | 1980-05-15 | 1980-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-14 | 1984-05-15 | 1984-11-14 | $7700.00 | Window Closed / Lapsed |