US3829314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectrostatic developing materials
Assignee: AB Dick Co
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Filing: 1972-08-22
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Granted: 1974-08-13
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Expires: 1992-08-22
Abstract
Abstract THE DEVELOPING MATERIALS OF THIS INVENTION ARE USED WITH ELECTROSTATIC DEVELOPING PROCESSES AND THE IMAGES ARE FIXED BY PASSING THE COPY SHEET THROUGH A PAIR OF STEEL ROLLERS UNDER PRESSURE. THE DEVELOPING MATERIALS ARE COMPOSED OF ALIPHATIC COMPONENTS HAVING FROM 6 TO 25 CARBON ATOMS THE ALIPHATIC COMPONENTS MAY ALSO BE COMBINED WITH THERMOPLASTIC SYNTHETIC RESINS TO CONTROL THE PRESSURE RESPONSE LEVEL. THE PRESSURE RESPONSE, THAT IS, THE FIXABILITY OF THE IMAGE ONTO THE COPY BY PRESSURE, OF THESE MATERIALS IS CORRELATED TO THE HEAT OF FUSION OF THE COMPOSITION AS MEASURED BY DIFFERENTIAL THERMAL ANALYSIS.
Inventors
- 👤 L Shelffo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:09
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/097; G03G9/09733; G03G15/00; G03G15/20; G03G15/2092; G03G9/087; G03G9/08702; G03G9/08713; G03G9/08715; G03G9/08717; G03G9/08775; G03G9/08782; G03G9/09775; G03G9/09783; G03G9/09791
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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |