Patent US3684503A successfully refreshed from Google Patents.
US3684503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel electrophotographic elements containing electrically conducting solid dispersions
Assignee: Eastman Kodak Co
•
Filing: 1971-01-13
•
Granted: 1972-08-15
•
Expires: 1991-01-13
Abstract
Abstract A NOVEL ELECTROPHOTOGRAPHIC ELEMENT HAVING DISTRIBUTED THROUGH A NON-RECORDING PORTION THEREOF, AN ELECTRICALLY CONDUCTING SOLID DISPERSION, IS DESCRIBED. THE DISPERSION EXTENDS FROM AN EXTERNAL SURFACE OF THE ELEMENT TO THE ELECTRICALLY CONDUCTING LAYER, PROVIDING A NOVEL METHOD FOR GROUNDING THIS LAYER WHILE CHARGING. TYPICAL DISPER- SIONS ARE FORMED FROM ANY ELECTRICALLY CONDUCTING MATERIAL DISPERSED IN A POLYMERIC BINDER IN THE ELEMENT.
Inventors
- 👤 Wesley D Humphriss
- 👤 Lawrence C Bartlett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:21
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |