US2876202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoconducting powders and method of preparation
Assignee: RCA Corp
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Filing: 1954-12-01
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Granted: 1959-03-03
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Expires: 1974-12-01
Abstract
No abstract record available.
Inventors
- 👤 Charles J Busanovich
- 👤 Soren M Thomsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:38
CPC Classifications
H; H10; H10F; H10F30/00; G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/08; G03G5/087; H10D; H10D62/00; H10D62/80; H10D62/86; H10D62/864; H10F71/00; H10F71/128; H10F71/131; H10P; H10P10/00; H10P95/00; H10P95/80
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
72 words
A METHOD FOR PREPARING A PHOTOCONDUCTING POWDER COMPRISING RECRYSTALLIZING FROM A MOLTEN SOLVENT A MATERIAL SELECTED FROM THE GROUP CONSISTING OF SULFIDES, SELENIDES, AND SULFO-SELENIDES OF CADMIUM, SAID MOLTEN SOLVENT CONTAINING ACTIVATOR PROPORTIONS OF A CATION SELECTED FROM THE GROUP CONSISTING OF COPPER AND SILVER, WASHING SAID RECRYSTALLIZED MATERIAL TO REMOVE WATER-SOLUBLE CONSTITUENTS, DIFFUSING A TRACE OF HALIDE INTO SAID WASHED MATERIAL, AND THEN FIRING SAID HALIDE-DIFFUSED MATERIAL IN A SULFUR-CONTAINING ATMOSPHERE.
References Cited (Backward Citations)
US2651700A
Cited
US2765385A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |