US3352669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoconductive member and processes of preparing and using same
Assignee: Xerox Corp
•
Filing: 1964-01-31
•
Granted: 1967-11-14
•
Expires: 1984-01-31
Abstract
No abstract record available.
Inventors
- 👤 William J Murphy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:12
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/10; G03G5/102; G03G5/14; G03G5/142; G03G5/144
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A PHOTOCONDUCTIVE MEMBER COMPRISING AN ELECTRICALLY CONDUCTIVE SUPPORTIVE SUBSTRATE, A BARRIER LAYER IN ELECTRO-CHEMICAL CONTACT WITH AND DIRECTLY OVERLYING AT LEAST A PORTION OF SAID SUPPORTING SUBSTRATE, AND A SUBSTANTIALLY VITREOUS PHOTOCONDUCTIVE INSULATING LAYER COMPRISING AMORPHOUS SELENIUM SUBSTANTIALLY PERMANENTLY AFFIXED TO SAID BARRIER LAYER, SAID BARRIER LAYER OBTAINED BY CONTACTING SAID SUPPORTING SUBSTRATE WITH AN AQUEOUS MINERAL ACID SOLUTION COMPRISING A MEMBER SELECTED FROM THE GROUP CONSISTING OF H2CRO4, CRO3, THEIR WATER SOLUBLE SALTS, AND MIXTURES THEREOF.
Claim 2
Dependent Claim
77 words
A PHOTOCONDUCTIVE MEMBER COMPRISING AN ELECTRICALLY CONDUCTIVE SUPPORTIVE SUBSTRATE, A BARRIER LAYER IN ELECTRO-CHEMICAL CONTACT WITH AND DIRECTLY OVERLYING AT LEAST A PORTION OF SAID SUPPORTING SUBSTRATE, AND A SUBSTANTIALLY VITREOUS PHOTOCONDUCTIVE INSULATING LAYER COMPRISING AMORPHOUS SELENIUM SUBSTANTIALLY PERMANENTLY AFFIXED TO SAID BARRIER LAYER, SAID BARRIER LAYER OBTAINED BY CONTACTING SAID SUPPORTING SUBSTRATE WITH AN AQUEOUS MINERAL ACID SOLUTION COMPRISING A MEMBER SELECTED FROM THE GROUP CONSISTING OF H2CRO4, CRO3, THEIR WATER SOLUBLE SALTS, AND MIXTURES THEREOF.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |