Patent US3681068A successfully refreshed from Google Patents.
US3681068A
Expired / Lapsed
US
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Organic photoconductors
Assignee: Eastman Kodak Co
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Filing: 1971-02-25
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Granted: 1972-08-01
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Expires: 1991-02-25
Abstract
Abstract COMPOUNDS HAVING THE FORMULA: (2-R1,3,4,5-(-(CH2)Y-N(-)-(CH2)Y-),6-R2-PHENYL)-(CH=CH)X- (3,4,5-(-(CH2)Y-N(-)-(CH2)Y-),6-R4-1,2-PHENYLENE)-R3 ARE USEFUL AS PHOTOCONDUCTORS.
Inventors
- 👤 Arthur Lee Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:13
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0622; G03G5/0644; G03G5/0661; G03G5/0646; G03G5/065; G03G5/0664; G03G5/0666; G03G5/0668; G03G5/067
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |