Patent US3802604A successfully refreshed from Google Patents.
US2862815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic member
Assignee: RCA Corp
•
Filing: 1953-10-01
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Granted: 1958-12-02
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Expires: 1973-10-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Meyer L Sugarman
- 👤 Alexander J Moncrieff-Yeates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:40
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/087; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A PROCESS OF PRINTING WHICH COMPRISES PROVIDING A BACKING SHEET HAVING A SURFACE COATED WITH A COMPOSITION COMPRISING ABOUT 50% TO ABOUT 90% BY WEIGHT OF LEAD IODIDE SUSPENDED IN AN ELECTRICALLY-INSULTING, FILM-FORMING, RESINOUS, ORGANIC BINDER SELECTED FROM THE CLASS CONSISTING OF POLYSTYRENE, SILICONE, PHENOFORMALDEHYDE, CELLULOSE ETHER AND CELLULOSE ESTER, SAID ORGANIC BINDER CORRESPONDINGLY COMPRISING 50% TO 10% BY WEIGHT OF SAID COMPOSITION, SAID SURFACE COATING HAVING A VOLUME RESISTIVEITY GREATER THAN SAID BACKING SHEET, FORMING AN ELECTROSTATIC IMAGE ON SAID COATED SURFACE, APPLYING AN ELECTROSCOPIC POWDER TO SAID ELECTROSTATIC IMAGE TO RENDER IT VISIBLE AND FIXING SAID IMAGE TO SAID COATED SURFACE.
Claim 2
Dependent Claim
103 words
A PROCESS OF PRINTING WHICH COMPRISES PROVIDING A BACKING SHEET HAVING A SURFACE COATED WITH A COMPOSITION COMPRISING ABOUT 50% TO ABOUT 90% BY WEIGHT OF LEAD IODIDE SUSPENDED IN AN ELECTRICALLY-INSULTING, FILM-FORMING, RESINOUS, ORGANIC BINDER SELECTED FROM THE CLASS CONSISTING OF POLYSTYRENE, SILICONE, PHENOFORMALDEHYDE, CELLULOSE ETHER AND CELLULOSE ESTER, SAID ORGANIC BINDER CORRESPONDINGLY COMPRISING 50% TO 10% BY WEIGHT OF SAID COMPOSITION, SAID SURFACE COATING HAVING A VOLUME RESISTIVEITY GREATER THAN SAID BACKING SHEET, FORMING AN ELECTROSTATIC IMAGE ON SAID COATED SURFACE, APPLYING AN ELECTROSCOPIC POWDER TO SAID ELECTROSTATIC IMAGE TO RENDER IT VISIBLE AND FIXING SAID IMAGE TO SAID COATED SURFACE.
References Cited (Backward Citations)
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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) | 1961-12-01 | 1962-06-02 | 1962-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-01 | 1966-06-02 | 1966-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-01 | 1970-06-02 | 1970-12-02 | $7700.00 | Window Closed / Lapsed |