Patent US3681064A successfully refreshed from Google Patents.
US3681064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectrophoretic imaging process employing multicomponent electrically photosensitive particles
Assignee: Xerox Corp
•
Filing: 1971-02-03
•
Granted: 1972-08-01
•
Expires: 1991-02-03
Abstract
Abstract A PHOTOELECTROPHORETIC IMAGING SYSTEM IS DESCRIBED WHICH INCLUDES AT LEAST TWO ELECTRODES, AT LEAST ONE OF WHICH IS AT LEAST PARTIALLY TRANSPARENT. A THIN LAYER OF A SUSPENSION OF PARTICLES IN A LIQUID CARRIER IS INTERPOSITIONED BETWEEN THE ELECTRODES. AT LEAST ONE OF THE ELECTRODES HAS A BLOCKING SURFACE FACING THE SUSPENSION. MEANS ARE INCLUDED TO IMPOSE AN ELECTRIC FIELD ACROSS THE SUSPENSION BETWEEN THE ELECTRODES AND TO EXPOSE THE SUSPENSION TO AN IMAGE WITH ELECTROMAGNETIC RADIATION THROUGH THE TRANSPARENT ELECTRODE. THIS APPARATUS IS SUITABLE FOR PREPARING BOTH MONOCHROMATIC AND POLYCHROMATIC COPIES OF ORIGINALS BY PARTICLE MIGRATION THROUGH THE SUSPENSION.
Inventors
- 👤 Shu-Hsiung Yeh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:50
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/01; G03G13/00; G03G13/14; G03G17/00; G03G17/04
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |