US3647696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uniform polarity resin electrostatic toners
Assignee: Eastman Kodak Co
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Filing: 1968-10-23
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Granted: 1972-03-07
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Expires: 1988-10-23
Abstract
Abstract A UNIFORM POLARITY, PARTICULATE, DYED RESIN ELECTROSTATIC TONER IS PREPARED BY DISSOLVING AT LEAST ONE MONO- OR DIFUNCTIONAL ORGANIC ACID NIGROSINE SALT IN A THERMOPLASTIC RESIN BINDER. ADMIXING THE COMPOSITE TONER WITH A CARRIER SUCH AS POWDERED IRON PRODUCES A DEVELOPER FOR ELECTROSTATIC LATENT IMAGES.
Inventors
- 👤 James R Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:36
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/09; G03G9/0906; G03G9/0914
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) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |