US3706560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image recording material containing titanium dioxide,and zinc oxide in minor amount and the use thereof
Assignee: Northrop Grumman Guidance and Electronics Co Inc
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Filing: 1970-07-21
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Granted: 1972-12-19
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Expires: 1990-07-21
Abstract
Abstract AN IMPROVED TITANIUM DIOXIDE PHOTORECEPTOR INCLUDES A MINOR AMOUNT OF ZINC OXIDE. IT HAS BEEN FOUND THAT PREFERABLY AN AMOUNT OF UP TO ABOUT 10% ZINC OXIDE IN A TITANIUM DIOXIDE OR OTHER PHOTOCONDUCTOR LAYER MORE THAN DOUBLES THE PHOTOSENSITIVITY. THE IMPROVED LAYER IS WELL SUITED TO A KNOWN PHOTOLYTICALLY INITIATED PROCESS.
Inventors
- 👤 Clark F Grain
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:23
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/705
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |