Patent US3711280A successfully refreshed from Google Patents.
US3711280A
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Metallocene photoconductors used in electrophotography
Assignee: Eastman Kodak Co
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Filing: 1971-02-17
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Granted: 1973-01-16
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Expires: 1991-02-17
Abstract
Abstract A CLASS OF METALLOCENE COMPOUNDS ARE DISCLOSED WHICH EXHIBIT PHOTOCONDUCTIVE PROPERTIES USEFUL IN ELECTROPHOTOGRAPHY.
Inventors
- 👤 A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:21
CPC Classifications
C; C07; C07F; C07F17/00; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0662
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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |