US3813243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic photosensitive member
Assignee: Canon Inc
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Filing: 1972-07-10
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Granted: 1974-05-28
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Expires: 1992-07-10
Abstract
Abstract AN ELECTROPHOTOGRAPHIC PHOTOSENSITIVE MEMBER IS COMPOSED ESSENTIALLY OF A SUPPORT, A PHOTOCONDUCTIVE LAYER AND AN INSULATING LAYER, AND THE PHOTOCONDUCTIVE LAYER BEING COMPOSED OF A SELENIUM LAYER AT THE SUPPORT SIDE AND A SELENIUM-TELLURIUM LAYER AT THE INSULATING LAYER SIDE.
Inventors
- 👤 N Kitajima
- 👤 T Masaki
- 👤 H Kondo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:53
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/043; G03G5/0433
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) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |