Patent US2986467A successfully refreshed from Google Patents.
US2986467A
Expired / Lapsed
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Photoconductive layer for recording element and method of producing same
Assignee: GAF Chemicals Corp
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Filing: 1958-12-17
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Granted: 1961-05-30
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Expires: 1978-12-17
Abstract
No abstract record available.
Inventors
- 👤 Kostelec Joze
- 👤 Heinz F Nitka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:39
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/10; G03G5/101; G03G5/105; G03G5/108
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
IN AN ELECTROPHOTOGRAPHIC ELEMENT COMPRISING A NON-METALLIC BASE PLATE HAVING THEREON A PHOTOCONDUCTIVE INSULATING LAYER COMPRISING A ZINC OXIDE PHOTOCONBINDER, THE ELECTRICAL RESISTANCE OF WHICH IS HIGHER THAN BINDER, THE ELECTRICAL RESISTANCE OF WHICH IS HIGHER THAN THE INDIVIDUAL RESISTANCES OF THE BASE PLATE AND PHOTOCONDUCTOR THE IMPROVEMENT WHICH COMPRISES INTERPOLATING BETWEEN THE BASE PLATE AND PHOTOCONDUCTIVE LAYER A STRATUM OF A FILM-FORMING VINYL POLYMER SELECTED FROM THE CLASS CONSISTING OF AN INTERPOLYMER OF A VINYL ESTER, ACRYLIC ACID AND STYRENE, AND A COPOLYMER OF METHYL METHACRYLATE AND METHACRYLIC ACID.
Claim 2
Dependent Claim
90 words
IN AN ELECTROPHOTOGRAPHIC ELEMENT COMPRISING A NON-METALLIC BASE PLATE HAVING THEREON A PHOTOCONDUCTIVE INSULATING LAYER COMPRISING A ZINC OXIDE PHOTOCONBINDER, THE ELECTRICAL RESISTANCE OF WHICH IS HIGHER THAN BINDER, THE ELECTRICAL RESISTANCE OF WHICH IS HIGHER THAN THE INDIVIDUAL RESISTANCES OF THE BASE PLATE AND PHOTOCONDUCTOR THE IMPROVEMENT WHICH COMPRISES INTERPOLATING BETWEEN THE BASE PLATE AND PHOTOCONDUCTIVE LAYER A STRATUM OF A FILM-FORMING VINYL POLYMER SELECTED FROM THE CLASS CONSISTING OF AN INTERPOLYMER OF A VINYL ESTER, ACRYLIC ACID AND STYRENE, AND A COPOLYMER OF METHYL METHACRYLATE AND METHACRYLIC ACID.
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) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |