US3712810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ambipolar photoreceptor and method
Assignee: Xerox Corp
•
Filing: 1970-12-18
•
Granted: 1973-01-23
•
Expires: 1990-12-18
Abstract
Abstract AN AMBIPOLAR PHOTORECEPTOR MEMBER WHICH COMPRISES A SUBSTRATE, A THIN LAYER OF THALLIUM DOPED VITREOUS SELENIUM OR THALLIUM DOPED SELENIUM-ARSENIC CONTAINED ON THE SBSTRATE, AND A LAYER OF VITREOUS SELENIUM OR SELENIUMARSENIC OVERLAYING THE THALLIUM DOPED LAYER. THE PHOTOAND DISCHARGE FOR PHOTOGENERATED CHARGES OF EITHER AND DISCHARGE FOR PHOTOGENERATED CHARGES OF EITHER POLARITY.
Inventors
- 👤 A Ciuffini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:32
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/043; G03G5/0433
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |