US3634333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for coating zinc oxide powder with cadmium sulfide
Assignee: Fujifilm Holdings Corp
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Filing: 1969-04-08
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Granted: 1972-01-11
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Expires: 1989-04-08
Abstract
Abstract PROCESS FOR PRODUCING PHOTOCONDUCTIVE POWDER COMPRISING HEATING AT A TEMPERATURE OVER 40*C. A SLURRY PREPARED BY ADDING PHOTOCONDUCTIVE ZINC OXIDE TO A SOLUTION COMPRISING PRIMARILY WATER, A SULFUR CONTAINING WATER SOLUBLE COMPOUND WHICH FORMS SULFUR IONS, AND A WATER SOLUBLE CADMIUM COMPOUND. THE CADMIUM SULFIDE IS DEPOSITED ON THE SURFACE OF THE ZINC OXIDE DURING HEATING.
Inventors
- 👤 Yasuo Tamai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:49
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08
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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |