Patent JPS63253924A successfully refreshed from Google Patents.
US3597272A
Expired / Lapsed
US
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Electrophotographic element and process
Assignee: Eastman Kodak Co
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Filing: 1968-03-29
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Granted: 1971-08-03
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Expires: 1988-03-29
Abstract
Abstract AN IMBIBITION PROCEDURE IS DISCLOSED AS A MEANS FOR FORMING AN ELECTRICALLY CONDUCTIVE LAYER ON A SUITABLE SUPPORT. THE CONDUCTIVE LAYER IS FORMED BY INBIBING A BINDERFREE SOLUTION OF VOLATILE SOLVENT AND A METAL-CONTAINING SEMICONDUCTOR INTO AN ELECTRICALLY INSULATING POLYMERIC SUBCOATING CARRIED ON A SUPPORT AND EVAPORATING THE SOLVENT. THE CONDUCTIVE LAYERS ARE USEFUL IN ELECTROPHOTOGRAPHIC ELEMENTS.
Inventors
- 👤 Eugene P Gramza
- 👤 Frederick A Stahly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:36
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/10; G03G5/104
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |