Patent US2993787A successfully refreshed from Google Patents.
US2993787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic printing
Assignee: RCA Corp
•
Filing: 1956-08-14
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Granted: 1961-07-25
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Expires: 1976-08-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Meyer L Sugarman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:48
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/05; G03G5/0528; G03G5/0557; G03G5/0585; G03G5/0532; G03G5/0542; G03G5/0592; G03G9/00; G03G9/08; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
AN ARTICLE OF MANUFACTURE ADAPTED FOR USE IN ELECTROSTATIC PRINTING COMPRISING A BACKING SHEET COATED WITH A PHOTOCONDUCTING COMPOSITION INCLUDING ABOUT 100 TO 900 PARTS BY WEIGHT OF PHOTOCONDUCTING ZINC OXIDE AND ABOUT 100 PARTS BY WEIGHT OF A VEHICLE CONSISTING ESSENTIALLY OF ABOUT 5% TO 25% BY WEIGHT OF ZINC ACETATE AND ABOUT 95% TO ABOUT 75% BY WEIGHT OF RESINOUS POLYVINYL ALCOHOL.
Claim 2
Dependent Claim
64 words
AN ARTICLE OF MANUFACTURE ADAPTED FOR USE IN ELECTROSTATIC PRINTING COMPRISING A BACKING SHEET COATED WITH A PHOTOCONDUCTING COMPOSITION INCLUDING ABOUT 100 TO 900 PARTS BY WEIGHT OF PHOTOCONDUCTING ZINC OXIDE AND ABOUT 100 PARTS BY WEIGHT OF A VEHICLE CONSISTING ESSENTIALLY OF ABOUT 5% TO 25% BY WEIGHT OF ZINC ACETATE AND ABOUT 95% TO ABOUT 75% BY WEIGHT OF RESINOUS POLYVINYL ALCOHOL.
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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) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |