US3600165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical sensitisation of inorganic photoconductors
Assignee: Agfa Gevaert NV
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Filing: 1969-12-30
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Granted: 1971-08-17
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Expires: 1989-12-30
Abstract
Abstract AN IMPROVED PHOTOCONDUCTIVE MATERIAL FOR USE IN PHOTOCONDUCTIVE RECORDING ELEMENTS IS OBTAINED BY TREATING A CONVENTIONAL INORGANIC METALLIC PHOTOCONDUCTIVE COMPOUND WITH A SMALL AMOUNT OF AN ORGANIC CHELATING AGENT WHICH IS ADAPTED TO FORM WITH THE METALLIC IONS OF THE PHOTOCONDUCTIVE COMPOUND A COLORED CHELATE OF INCREASED LIGHT-SENSITIVITY RELATIVE TO THE UNTREATED PHOTOCONDUCTIVE COMPOUND. A PREFERRED AMOUNT OF THE CHELATING COMPOUND IS 0.001-0.5% BY WEIGHT OF THE PHOTOCONDUCTIVE COMPOUND. A VARIETY OF SUITABLE ORGANIC CHELATING AGENTS ARE DISCLOSED.
Inventors
- 👤 Jozef Frans Willems
- 👤 Albert Lucien Poot
- 👤 Robert Joseph Noe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:47
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0662; C; C09; C09B; C09B26/00; C09B26/02; C09B57/00; C09B57/10; G03G5/05; G03G5/0528; G03G5/0532; G03G5/0539; G03G5/0542; G03G5/0546; G03G5/0557; G03G5/056; G03G5/0564; G03G5/0567; G03G5/0622; G03G5/0644; G03G5/0661; G03G5/09; G03G5/12
Claims Analysis
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References Cited (Backward Citations)
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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) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |