Patent FR1176110A successfully refreshed from Google Patents.
US4055421A
Expired / Lapsed
US
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Sensitizer for photoconductive sensitive material
Assignee: Ricoh Co Ltd
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Filing: 1975-12-10
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Granted: 1977-10-25
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Expires: 1995-12-10
Abstract
Abstract The present invention provides 1,3,7-trinitrophenazine-5-oxide which has an excellent sensitization effect on organic photoconductors, as well as a photoconductive sensitive material comprising said compound and an organic photoconductor.
Inventors
- 👤 Masafumi Ohta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:25
CPC Classifications
C; C07; C07D; C07D241/00; C07D241/36; C07D241/50; C07D241/52; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0622; G03G5/0624; G03G5/0635; G03G5/0638
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
10 words
A photoconductive material which comprises an organic photoconductor and 1,3,7-trinitrophenazine-5-oxide.
Claim 2
Dependent Claim
10 words
A photoconductive material which comprises an organic photoconductor and 1,3,7-trinitrophenazine-5-oxide.
Claim 3
Dependent Claim
59 words
A photoconductive material according to claim 1, wherein said organic photoconductor is selected from the group consisting of non-polymeric organic photoconductors and polymeric organic photoconductors, and the amount of said 1,3,7-trinitrophenazine-5-oxide is in the range of from 0.01 to 1.30 moles per 1 mole of said non-polymeric organic photoconductor or per one monomer unit of said polymeric organic photoconductor.
References Cited (Backward Citations)
GB1091618A
Cited
US3518082A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-24 | 1981-04-25 | 1981-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-24 | 1985-04-25 | 1985-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-24 | 1989-04-25 | 1989-10-25 | $7700.00 | Window Closed / Lapsed |