US3518082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of electrophotographic imaging employing phenazine as the sensitizer for the photoconductive material
Assignee: Ampex Corp
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Filing: 1969-03-10
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Granted: 1970-06-30
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Expires: 1989-03-10
Abstract
No abstract record available.
Inventors
- 👤 Eraldo M Chiecchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:33
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0622; G03G5/0624; G03G5/0635; G03G5/0638
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3052540A
Cited
US3037861A
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US3155503A
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US3244516A
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US3232755A
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US3279918A
Cited
US3234280A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |