Patent US3757234A successfully refreshed from Google Patents.
Patent US3234020A successfully refreshed from Google Patents.
US3234020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plate for electrostatic electrophotography
Assignee: Xerox Corp
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Filing: 1961-06-21
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Granted: 1966-02-08
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Expires: 1981-06-21
Abstract
No abstract record available.
Inventors
- 👤 Jerry L Stockdale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:53
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/14; G03G5/142; G03G5/144
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
80 words
AN IMPROVED XEROGRAPHIC PLATE SUITALBE FOR THE PRODUCTION OF CONTINUOUS-TONE ELECTROPHOTOGRAPHIC IMAGES, SAID PLATE COMPRISING A BRASS BACKING MEMBER, AN INTERFACIAL THIN COATING OF WAX PRODUCED BY APPLYING A WAX COATING TO THE BRASS SURFACE AND THOROUGHLY POLISHING TO REMOVE EXCESS WAX, AND A LAYER THEREOVER OF VITREOUS SELENIUM UNIFORM OVER ITS ENTIRE AREA WITHIN A TOLERANCE OF ABOUT 5% AND COATED THEREON BY VACUUM EXAPORATION WHILE THE BRASS MEMBER WAS MAINTAINED AT A TEMPERATURE BETWEEN ABOUT 60* AND 75*C.
References Cited (Backward Citations)
US2657152A
Cited
US2901348A
Cited
GB755683A
Cited
US2809294A
Cited
US2970906A
Cited
US2901349A
Cited
US3041166A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |