US3625682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonremovable discontinuous electrode for electrophotography
Assignee: OI Glass Inc
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Filing: 1968-11-29
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Granted: 1971-12-07
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Expires: 1988-11-29
Abstract
Abstract D R A W I N G A PERSISTENT INTERNAL POLARIZATION (PIP) ELECTROPHOTOGRAPHY PRINTING OR COPYLING SYSTEM COMPRISING STATIONARY ELECTRODES WHICH ARE NOT REMOVED DURING DEVELOPMENT, AND WHEREIN AT LEAST ONE ELECTRODE IS OF A DISCONTINUOUS CONFIGURATION, SUCH AS A FORAMINOUS CONDUCTIVE MESH, WHICH IS EMBEDDED IN OR ATTACHED TO THE SURFACE OF THE PIP LAYER WHICH IS TO BE TONED (THE TOP LAYER), SUCH THAT AN ELECTRIC FIELD CAN BE APPLIED TO THE PIP LAYER WHILE PERMITTING RADIATION TO REACH THE PIP LAYER, AND WHEREBY TONING AND TRANSFER MAY BE ACCOMPLISHED WITHOUT REMOVING EITHER ELECTRODE.
Inventors
- 👤 Eugene A Oster
- 👤 Barnett Rosenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:14
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/056; G03G5/00; G03G5/02; G03G5/024; G03G5/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |