Patent US3645883A successfully refreshed from Google Patents.
US3645883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoelectrophoretic imaging apparatus employing photosensitive particles exhibiting fatigue characteristics
Assignee: Xerox Corp
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Filing: 1970-06-01
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Granted: 1972-02-29
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Expires: 1990-06-01
Abstract
Abstract AN ELECTROPHORETIC IMAGING SYSTEM COMPRISING EXPOSING A SUSPENSION OF ELECTRICALLY PHOTOSENSITIVE PARTICLES IN A LIQUID CARRIER TO IMAGEWISE LIGHT AND, SUBSEQUENTLY, DEVELOPING THE IMAGE BY APPLYING A FIELD ACROSS THE SUSPENSION WHICH CAUSES PARTICLE MIGRATION IN IMAGE CONFIGURATION. THE PHOTOSENSITIVE PARTICLES OF THIS SYSTEM EXHIBIT FATIGUE CHARACTERISTICS IN THAT THEY REMAIN ELECTRICALLY SENSITIVE FOR A PERIOD OF TIME AFTER HAVING BEEN EXPOSED TO ACTIVATING ELECTROMAGNETIC RADIATION. D R A W I N G
Inventors
- 👤 Ray H Luebbe Jr
- 👤 Leonard M Carreira
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:13
CPC Classifications
G; G03; G03G; G03G17/00; G03G17/04; G03G13/00; G03G13/14; G03G13/22; G03G13/24
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) | 1975-02-28 | 1975-08-30 | 1976-02-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-28 | 1979-08-30 | 1980-02-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-28 | 1983-08-30 | 1984-02-29 | $7700.00 | Window Closed / Lapsed |