US3672981A
Expired / Lapsed
US
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Electrothermographic duplicating sheet
Assignee: Dennison Manufacturing Co
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Filing: 1969-10-02
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Granted: 1972-06-27
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Expires: 1989-10-02
Abstract
Abstract AN ELECTROTHERMOGRAPHIC DUPLICATING SHEET IS DISCLOSED. A LAYER COMPRISING A MIXTURE OF AN ELECTROSTATICALLY CHARGEABLE RESIN AND AN ORGANIC HEAT-ACTIVATABLE TACKIFYING AGENT IS ADHERED TO A CONDUCTIVE BASE SHEET. WHEN SUBJECTED TO RADIANT THERMOGRAPHIC HEAT, BOTH A LATENT TACKY IMAGE AND LATENT ELECTROSTATIC IMAGE IS FORMED.
Inventors
- 👤 Donald D Sloan
- 👤 Suresh D Amberkar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:47
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/398; G; G03; G03G; G03G5/00; G03G5/02; G03G5/028; A; A63; A63F; A63F9/00; A63F9/06; A63F9/12; A63F9/1204; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/3179; Y10T428/31797; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |