US3170790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Red sensitive xerographic plate and process therefor
Assignee: Xerox Corp
•
Filing: 1959-01-08
•
Granted: 1965-02-23
•
Expires: 1979-01-08
Abstract
No abstract record available.
Inventors
- 👤 Harold E Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:54
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08207
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
36 words
A XEROGRAPHIC PLATE COMPRISING A LAYER OF VITREOUS SELENIUM ON AN ELECTRICALLY CONDUCTIVE BACKING MEMBER, SAID SELENIUM LAYER HAVING A PLURALITY OF SMALL, DISCRETE, HIGHLY CRYSTALLIZED AREAS ON ONLY ITS SURFACE OPPOSITE SAID CONDUCTIVE BACKING MEMBER.
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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) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |