US3265496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoconductive substances for electrophotography
Assignee: Eastman Kodak Co
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Filing: 1961-12-29
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Granted: 1966-08-09
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Expires: 1981-12-29
Abstract
No abstract record available.
Inventors
- 👤 Charles J Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:27
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/07; G03G5/071
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
AN ELECTROPHOTOGRAPHIC ELEMENT COMPRISING AN ELECTRICALLY CONDUCTING SUPPORT HAVING COATED THEREON A PHOTOCONDUCTIVE COMPOSITION CONTAINING AS THE PHOTOCONDUCTIVE SUBSTANCE THEREOF, A POLYFUNCTIONAL TERTIARY AMINE SELECTED FROM THE GROUP CONSISTING OF (A) POLYTRIPHENYLAMINES CONSISTING ESSENTIALLY OF RECURRING MONOMERIC UNITS HAVING THE FORMULA:
Claim 2
Dependent Claim
41 words
AN ELECTROPHOTOGRAPHIC ELEMENT COMPRISING AN ELECTRICALLY CONDUCTING SUPPORT HAVING COATED THEREON A PHOTOCONDUCTIVE COMPOSITION CONTAINING AS THE PHOTOCONDUCTIVE SUBSTANCE THEREOF, A POLYFUNCTIONAL TERTIARY AMINE SELECTED FROM THE GROUP CONSISTING OF (A) POLYTRIPHENYLAMINES CONSISTING ESSENTIALLY OF RECURRING MONOMERIC UNITS HAVING THE FORMULA:
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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |