US3589897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel electrophotographic sensitizers
Assignee: Eastman Kodak Co
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Filing: 1968-03-18
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Granted: 1971-06-29
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Expires: 1988-03-18
Abstract
Abstract COMPOUNDS HAVING THE STRUCTURE AR1-N(-AR2)-(1,4-PHENYLENE)-(C(-(1,4-PHENYLENE)-N(-AR1)- AR2)=(CYCLOHEXA-2,5-DIEN-1,4-DIYLIDENE)=N(+)(-AR2)-AR1)N- H NX(-) WHERE N=2 TO 12 ARE SENSITIZERS FOR PHOTOCONDUCTORS IN ELECTROPHOTOGRAPHIC ELEMENTS.
Inventors
- 👤 Charles J Fox
- 👤 Arthur L Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:07
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0601; G03G5/0612; G03G5/07; G03G5/075; G03G5/076; G03G5/0763; G03G5/0764; G03G5/0765
Claims Analysis
Total Claims: 0
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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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |