US3553133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toner material and compositions of a polymeric organic-silicon dye
Assignee: Eastman Kodak Co
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Filing: 1969-10-01
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Granted: 1971-01-05
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Expires: 1989-10-01
Abstract
Abstract AN ELECTROSCOPIC TONER FOR USE IN DEVELOPING ELECTROSTATIC CHARGE PATTERNS IS COMPRISED OF FREE-FLOWING PARTICLES CONTAINING A POLYMERIC ORGANIC-SILICON DYE HAVING A BIVALENT DIAMINOANTHRAQUINONE MOIETY IN THE RECURRING UNIT. THE TONER CAN CONTAIN FROM 0 TO ABOUT 95% BY WEIGHT OF A COLORLESS POLYMERIC BINDER MATERIAL. DEVELOPER COMPOSITIONS CAN BE FORMED USING FROM ABOUT 1 TO ABOUT 10% BY WEIGHT OF THIS TONER MIXED WITH FROM ABOUT 90 TO ABOUT 99% BY WEIGHT OF CARRIER GRANULES, SUCH AS POWDERED IRON OR GLASS BEADS.
Inventors
- 👤 James R Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:03
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/087; G03G9/08742; G03G9/08773; G03G9/08784; G03G9/08791; G03G9/09; G03G9/0906; G03G9/0908
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |