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Patent US3647428A successfully refreshed from Google Patents.
US3647428A
Expired / Lapsed
US
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Photoconductive material for electrophotography
Assignee: Fujifilm Holdings Corp
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Filing: 1970-11-27
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Granted: 1972-03-07
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Expires: 1990-11-27
Abstract
Abstract WHEREIN X is CN or COOR'', R is hydrogen atom, halogen atom, OR'' or COOR'', and R'' is alkyl group having one to four carbon atoms. A photoconductive material comprising an electroconductive support having coated thereon a layer containing a sensitizer, a plasticizer and a high-molecular compound having the following repeating unit:
Inventors
- 👤 Hisatake Ono
- 👤 Syu Watarai
- 👤 Harumi Katsuyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:29
CPC Classifications
C; C08; C08F; C08F26/00; C08F26/06; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/07; G03G5/071; G03G5/072
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A photoconductive material comprising an electroconductive support having coated thereon a layer containing a plasticizer and a high molecular compound having the following repeating unit:
Claim 2
Dependent Claim
27 words
A photoconductive material comprising an electroconductive support having coated thereon a layer containing a sensitizer, a plasticizer and a high molecular compound having the following repeating unit:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |