US3707369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoconductive elements containing 2-methyl-3,3-dimethyl indole derivatives
Assignee: Fujifilm Holdings Corp
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Filing: 1970-08-20
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Granted: 1972-12-26
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Expires: 1990-08-20
Abstract
Abstract AN ELECTROPHOTOGRAPHIC ELEMENT COMPRISING A CONDUCTING SUPPORT COATED WITH AN INSULATING BINDER HAVING DISPERSED THEREIN A PHOTOCONDUCTIVE INDOLINE COMPOUND HAVING THE GENERAL FORMULA: 1-(R2-(CH2)N-),2-(CH2=),3,3-DI(CH3-),R1-INDOLINE (WHEREIN, R1 IS H, AN ALKYL HAVING 1-4 CARBON ATOMS, A HALOGEN, -NO2, -OR3 OR COOR3 (R3 BEING AN ALKYL HAVING 1-4 CARBON ATOMS), R2 IS H, OH, CN OR A PHENYL AND N IS 1-4).
Inventors
- 👤 Hisatake Ono
- 👤 Chiaki Osada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:03
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0622; G03G5/0624; G03G5/0627; G03G5/0629
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) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |