US3730711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoconductive material for electrophotography
Assignee: Fujifilm Holdings Corp
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Filing: 1970-08-13
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Granted: 1973-05-01
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Expires: 1990-08-13
Abstract
Abstract A PHOTOCONDUCTIVE MATERIAL FOR ELECTROPHOTOGRAPHY WHICH CONSISTS ESSENTIALLY OF AN INDOLINE DERIVATIVE HAVING A RADICAL REPRESENTED BY THE FOLLOWING FORRMULA I: 1-(R2-(CH2)N-),2-((-)X-CO-CH=),3,3-DI(CH3-),5-R1-2,3- DIHYDROINDOLE WHEREIN R1 REPRESENTS A HYDROGEN, A HALOGEN ATOM, A LOWER ALKYL -NO2, -OR OR -COOR GROUP (R BEING A LOWER ALKYL GROUP), R2 REPRESENTS H, -OR5, -CN OR A PHENYL GROUP (R3 BEING H OR A LOWER ALKYL GROUP), N IS AN INTEGER HAVING THE VALUE OF 1-4, X REPRESENTS EITHER A SINGLE BOND OR -NH- GROUP.
Inventors
- 👤 H Ono
- 👤 S Watarai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:33
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0622; G03G5/0624; G03G5/0627; G03G5/0629; G03G5/0644; G03G5/0661
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) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |