US3694359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dry electroscopic toner compositions
Assignee: Eastman Kodak Co
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Filing: 1970-05-04
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Granted: 1972-09-26
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Expires: 1990-05-04
Abstract
Abstract A PARTICULATE, ELECTROSCOPIC DRY TONER COMPOSITION FOR USE IN DEVELOPING ELECTROSTATIC CHARGE PATTERNS IS PREPARED FROM A CARBONATE POLYMER HAVING A FIRST RECURRING UNIT CONTAINING AN ALKYLIDENEDIARYLENE MOIETY, A SULFONYL DIARYLENE MOIETY OR AN OXYDIARYLENE MOIETY AND A SECOND RECURRING UNIT CONTAINING AN ALKYLENE MOIETY.
Inventors
- 👤 Stewart H Merrill
- 👤 James R Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:58
CPC Classifications
C; C08; C08G; C08G64/00; G; G03; G03G; G03G9/00; G03G9/08; G03G9/087; G03G9/08742; G03G9/08757; G03G9/08771
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) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |