US3250613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Use of amines in photoconductographic coatings
Assignee: Eastman Kodak Co
•
Filing: 1961-05-01
•
Granted: 1966-05-10
•
Expires: 1981-05-01
Abstract
No abstract record available.
Inventors
- 👤 Eugene P Gramza
- 👤 Jr William J Knox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:38
CPC Classifications
G; G03; G03G; G03G17/00; G03G17/02; G03G5/00; G03G5/02; G03G5/04; G03G5/05; G03G5/0503; G03G5/0507; G03G5/051; G03G5/0514
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A ZINC OXIDE PHOTOCONDUCTOGRAPHIC COATING ON A CONDUCTIVE SUBSTRATE CONTAINING .01 TO 4.0% BY WEIGHT BASED ON THE ZINC OXIDE CONTENT OF THE COATING OF AN ORGANIC AMINE SELECTED FROM THE CLASS CONSISTING OF NR3 AND R4NX IN WHICH THE R''S MAY BE THS SAME OR DIFFERENT RADICALS SELECTED FROM THE CLASS CONSISTING OF HYDROGEN, (CH2)NNH2 IN WHICH N MAY BE 2 TO 22, (CH2CH2NH)NH IN WHICH N MAY BE 1 TO 11, AND ALKYL GROUPS DERIVED FROM FATTY ACIDS HAVING 1 TO 22 CARBON ATOMS, AND X IS A HALIDE.
Claim 2
Dependent Claim
91 words
A ZINC OXIDE PHOTOCONDUCTOGRAPHIC COATING ON A CONDUCTIVE SUBSTRATE CONTAINING .01 TO 4.0% BY WEIGHT BASED ON THE ZINC OXIDE CONTENT OF THE COATING OF AN ORGANIC AMINE SELECTED FROM THE CLASS CONSISTING OF NR3 AND R4NX IN WHICH THE R''S MAY BE THS SAME OR DIFFERENT RADICALS SELECTED FROM THE CLASS CONSISTING OF HYDROGEN, (CH2)NNH2 IN WHICH N MAY BE 2 TO 22, (CH2CH2NH)NH IN WHICH N MAY BE 1 TO 11, AND ALKYL GROUPS DERIVED FROM FATTY ACIDS HAVING 1 TO 22 CARBON ATOMS, AND X IS A HALIDE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |