US2987395A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrophotographic printing element
Assignee: Eastman Kodak Co
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Filing: 1956-12-26
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Granted: 1961-06-06
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Expires: 1976-12-26
Abstract
No abstract record available.
Inventors
- 👤 James G Jarvis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:15
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
AN ELECTROPHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT HAVING THEREON A FIRST STRATUM OF SUBSTANTIALLY COLORLESS PHOTOCONDUCTIVE ZINC OXIDE DISPERSED IN A RESIOUS INSULATING BINDER AND SUPERIMPOSED THEREON AND CONTIGUOUS THERETO A SECOND DISCRETE STRATUM OF (1) FROM ABOUT 0.1 TO 1.0 GRAM PHOTOCONDUCTIVE ZINC OXIDE PER SQUARE FOOT AND (2) FROM ABOUT 0.001 TO 0.5% BASED ON THE ZINC OXIDE PRESENT IN SAID SECOND STRATUM OF A DYE EX-
Claim 2
Dependent Claim
68 words
AN ELECTROPHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT HAVING THEREON A FIRST STRATUM OF SUBSTANTIALLY COLORLESS PHOTOCONDUCTIVE ZINC OXIDE DISPERSED IN A RESIOUS INSULATING BINDER AND SUPERIMPOSED THEREON AND CONTIGUOUS THERETO A SECOND DISCRETE STRATUM OF (1) FROM ABOUT 0.1 TO 1.0 GRAM PHOTOCONDUCTIVE ZINC OXIDE PER SQUARE FOOT AND (2) FROM ABOUT 0.001 TO 0.5% BASED ON THE ZINC OXIDE PRESENT IN SAID SECOND STRATUM OF A DYE EX-
References Cited (Backward Citations)
US2803541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-05 | 1964-12-05 | 1965-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-05 | 1968-12-05 | 1969-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-05 | 1972-12-05 | 1973-06-06 | $7700.00 | Window Closed / Lapsed |