US3526501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-diarylamino-substituted chalcone containing photoconductive compositions for use in electrophotography
Assignee: Eastman Kodak Co
•
Filing: 1967-02-03
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Granted: 1970-09-01
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Expires: 1987-02-03
Abstract
No abstract record available.
Inventors
- 👤 Charles J Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:30
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0601; G03G5/0618
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3257202A
Cited
US3158475A
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US3148982A
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US3265497A
Cited
US3387973A
Cited
US3331687A
Cited
US3390186A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-31 | 1974-03-02 | 1974-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-31 | 1978-03-02 | 1978-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-31 | 1982-03-02 | 1982-09-01 | $7700.00 | Window Closed / Lapsed |