Patent US3595646A successfully refreshed from Google Patents.
US3595646A
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US
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Method of treating photoconductors of the cadmium series to form electrophotosensitive material manifesting persistent internal polarization
Assignee: Katsuragawa Electric Co Ltd
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Filing: 1968-08-19
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Granted: 1971-07-27
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Expires: 1988-08-19
Abstract
Abstract AN IMPURITY IS DIFFUSED, BY FIRING, INTO THE SURFACE OF PHOTOCONDUCTIVE MATERIAL OF THE CADMIUM SERIES TO FORM A THIN SURFACE LAYER CONTAINING DEEP TRAP LEVELS WHEREBY TO OBTAIN AN ELECTROPHOTOSENSITIVE MATERIAL MANIFESTING PERSISTENT INTERNAL POLARIZATION EFFECT.
Inventors
- 👤 Koichi Kinoshita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:24
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/024; G03G5/04; G03G5/08; G03G5/14; G03G5/147
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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |