Patent US3447922A successfully refreshed from Google Patents.
US3447922A
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US
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Electrically photosensitive particles useful in photoelectrophoretic and xerographic imaging processes
Assignee: Xerox Corp
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Filing: 1964-12-28
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Granted: 1969-06-03
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Expires: 1984-12-28
Abstract
No abstract record available.
Inventors
- 👤 Lester Weinberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:48
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/77; G; G03; G03G; G03G16/00; G03G17/00; G03G17/10; G03G5/00; G03G5/02; G03G5/022; G03G5/024; G03G5/04; G03G5/06; G03G5/0622; G03G5/0644; G03G5/0661
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |