US2963365A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic printing
Assignee: RCA Corp
•
Filing: 1956-02-16
•
Granted: 1960-12-06
•
Expires: 1976-02-16
Abstract
No abstract record available.
Inventors
- 👤 Greig Harold Grey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:25
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/087
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
IN A METHOD OF ELECTROSTATIC PRINTING, THE STEPS COMPRISING: PROVIDING A RECORDING ELEMENT HAVING TWO OPPOSED LAYERS, EACH OF WHICH HAS AN EXPOSED OUTER SURFACE, ONE OF SAID LAYERS COMPRISING A FIRST PHOTOCONDUCTING INSULATING LAYER SENSITIVE TO AND ABSORPTIVE OF LIGHT IN A FIRST SPECTRAL RANGE AND CONSISTING ESSENTIALLY OF A FIRST FINELY-DIVIDED PHOTOCONDUCTOR DISPERSED IN AN ELECTRICALLY-INSULATING FILM-FORMING RESINOUS VEHICLE AND HAVING THE CAPABILITY OF BEING ELECTROSTATICALLY-CHARGED IN A FIRST POLARITY OF CHARGE, THE OTHER OF SAID LAYERS COMPRISING A SECOND PHOTOCONDUCTING INSULATING LAYER SENSITIVE TO AND ABSORPTIVE OF LIGHT IN A SECOND SPECTRAL RANGE AT LEAST A PORTION OF WHICH IS DIFFERENT FROM SAID FIRST SPECTRAL RANGE, SAID SECOND LAYER CONSISTING ESSENTIALLY OF A SECOND FINELY-DIVIDED PHOTOCONDUCTOR DISPERSED IN AN ELECTRICALLY-INSULATING FILM-FORMING RESINOUS VEHICLE AND HAVING THE CAPABILITY OF BEING ELECTROSTATICALLY CHARGED IN A SECOND POLARITY OF CHARGE, PRODUCING BLANKET ELECTROSTATIC CHARGE IN SAID FIRST POLARITY ON THE EXPOSED SURFACE OF SAID FIRST PHOTOCONDUCTING LAYER AND PRODUCING A BLANKET ELECTROSTATIC CHARGE IN SAID SECOND POLARITY ON THE EXPOSED SURFACE OF SAID SECOND PHOTOCONDUCTING LAYER BY SIMULTANEOUSLY SUBJECTING EACH OF
Claim 2
Dependent Claim
181 words
IN A METHOD OF ELECTROSTATIC PRINTING, THE STEPS COMPRISING: PROVIDING A RECORDING ELEMENT HAVING TWO OPPOSED LAYERS, EACH OF WHICH HAS AN EXPOSED OUTER SURFACE, ONE OF SAID LAYERS COMPRISING A FIRST PHOTOCONDUCTING INSULATING LAYER SENSITIVE TO AND ABSORPTIVE OF LIGHT IN A FIRST SPECTRAL RANGE AND CONSISTING ESSENTIALLY OF A FIRST FINELY-DIVIDED PHOTOCONDUCTOR DISPERSED IN AN ELECTRICALLY-INSULATING FILM-FORMING RESINOUS VEHICLE AND HAVING THE CAPABILITY OF BEING ELECTROSTATICALLY-CHARGED IN A FIRST POLARITY OF CHARGE, THE OTHER OF SAID LAYERS COMPRISING A SECOND PHOTOCONDUCTING INSULATING LAYER SENSITIVE TO AND ABSORPTIVE OF LIGHT IN A SECOND SPECTRAL RANGE AT LEAST A PORTION OF WHICH IS DIFFERENT FROM SAID FIRST SPECTRAL RANGE, SAID SECOND LAYER CONSISTING ESSENTIALLY OF A SECOND FINELY-DIVIDED PHOTOCONDUCTOR DISPERSED IN AN ELECTRICALLY-INSULATING FILM-FORMING RESINOUS VEHICLE AND HAVING THE CAPABILITY OF BEING ELECTROSTATICALLY CHARGED IN A SECOND POLARITY OF CHARGE, PRODUCING BLANKET ELECTROSTATIC CHARGE IN SAID FIRST POLARITY ON THE EXPOSED SURFACE OF SAID FIRST PHOTOCONDUCTING LAYER AND PRODUCING A BLANKET ELECTROSTATIC CHARGE IN SAID SECOND POLARITY ON THE EXPOSED SURFACE OF SAID SECOND PHOTOCONDUCTING LAYER BY SIMULTANEOUSLY SUBJECTING EACH OF
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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) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |