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US2662832A
Expired / Lapsed
US
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Process of producing an electrophotographic plate
Assignee: Xerox Corp
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Filing: 1950-04-08
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Granted: 1953-12-15
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Expires: 1970-04-08
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Middleton
- 👤 Otavio J Mengali
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:55
CPC Classifications
H; H10; H10D; H10D48/00; H10D48/01; H10D48/04; H10D48/043; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/082; G03G5/08207; H10P; H10P14/00; H10P14/20; H10P14/26; H10P14/263; H10P14/29; H10P14/2901; H10P14/2923; H10P14/34; H10P14/3402; H10P14/38; H10P14/3802; H10P14/3804
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
THE METHOD OF PRODUCING AN ELECTROPHOTOGRAPHIC ELEMENT HAVING A VITREOUS PHOTOCONDUCTIVE INSULATING FILM CONTAINING SELENIUM, WHICH COMPRISES PRESSING ONTO A CONDUCTIVE BASE A HEATPLASTICIZED COMPOSITION CONTAINING 0.1 TO 10 PERCENT BY WEIGHT OF SULFUR AS AN INHIBITOR THE AMOUNT OF INHIBITOR THUS BEING SUFFICIENT TO PREVENT FORMATION OF HEXAGONAL SELENIUM, AND THE BALANCE SELENIUM TO FORM A COATING ON SAID BASE AND FINALLY REMOVING THE OUTER SURFACE LAYER OF SAID COATING.
Claim 2
Independent Claim
71 words
THE METHOD OF PRODUCING AN ELECTROPHOTOGRAPHIC ELEMENT HAVING A VITREOUS PHOTOCONDUCTIVE INSULATING FILM CONTAINING SELENIUM, WHICH COMPRISES PRESSING ONTO A CONDUCTIVE BASE A HEATPLASTICIZED COMPOSITION CONTAINING 0.1 TO 10 PERCENT BY WEIGHT OF SULFUR AS AN INHIBITOR THE AMOUNT OF INHIBITOR THUS BEING SUFFICIENT TO PREVENT FORMATION OF HEXAGONAL SELENIUM, AND THE BALANCE SELENIUM TO FORM A COATING ON SAID BASE AND FINALLY REMOVING THE OUTER SURFACE LAYER OF SAID COATING.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |