US2657152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing an electrophotographic plate
Assignee: Xerox Corp
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Filing: 1950-03-31
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Granted: 1953-10-27
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Expires: 1970-03-31
Abstract
No abstract record available.
Inventors
- 👤 Otavio J Mengali
- 👤 Arthur E Middleton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:41
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; H10P14/34; H10P14/3402; H10P14/38; H10P14/3802
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN THE METHOD OF PRODUCING AN ELECTROHOTOGRAPHIC PLATE, THE STEPS CONSISTING OF FUSING SUBSTANTIALLY PURE SELENIUM AND HEATING SAID SELENIUM TO A TEMPERATURE IN THE RANGE BETWEEN 240 TO 400* C., HEATING AN INERT GAS TO A TEMPERATURE IN THE RANGE BETWEEN 225 TO 350* C., AND ATOMIZING SAID SELENIUM BY A STREAM OF SAID GAS UNDER PRESSURE OF 50 TO 80# PER SQUARE INCH TO SPRAY SAID SELENIUM IN FINE MOLTEN PARTICLES ONTO A BASE HAVING A TEMPERATURE OF FROM 180 TO 220* C. AND AN ELECTRICAL RESISTIVITY OF LESS THAN 1010 OHMS-CM.
Claim 2
Dependent Claim
94 words
IN THE METHOD OF PRODUCING AN ELECTROHOTOGRAPHIC PLATE, THE STEPS CONSISTING OF FUSING SUBSTANTIALLY PURE SELENIUM AND HEATING SAID SELENIUM TO A TEMPERATURE IN THE RANGE BETWEEN 240 TO 400* C., HEATING AN INERT GAS TO A TEMPERATURE IN THE RANGE BETWEEN 225 TO 350* C., AND ATOMIZING SAID SELENIUM BY A STREAM OF SAID GAS UNDER PRESSURE OF 50 TO 80# PER SQUARE INCH TO SPRAY SAID SELENIUM IN FINE MOLTEN PARTICLES ONTO A BASE HAVING A TEMPERATURE OF FROM 180 TO 220* C. AND AN ELECTRICAL RESISTIVITY OF LESS THAN 1010 OHMS-CM.
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) | 1956-10-26 | 1957-04-27 | 1957-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-26 | 1961-04-27 | 1961-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-26 | 1965-04-27 | 1965-10-27 | $7700.00 | Window Closed / Lapsed |