US2986534A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of photoconductive material
Assignee: General Electric Co
•
Filing: 1957-08-22
•
Granted: 1961-05-30
•
Expires: 1977-08-22
Abstract
No abstract record available.
Inventors
- 👤 Beutler Carolee Crawford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:40
CPC Classifications
H; H05; H05B; H05B33/00; H05B33/12; H05B33/14; H05B33/145; H05B33/10; H10; H10P; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
THE METHOD OF PREPARING A PHOTOCONDUCTIVE MATERIAL WHICH COMPRISES MIXING 100 GMS. OF CADMIUM SULFIDE WITH A SOLUTION OF .001-.03 GM. OF A COPPER SALT AND .1-.2 GM. OF AN ALKALI CHLORIDE FLUX, HEATING THE MIXTURE TO A TEMPERATURE OF 800-1150*C. AND IN AN INERT ATMOSPHERE TO CRYSTALLIZE THE CADMIUM SULFIDE AND BIND COPPER INTO THE CRYSTAL LATTICES, CRUSHING THE MATERIAL WITHOUT DESTROYING THE CADMIUM SULFIDE CRYSTAL STRUCTURE, WASHING THE UNBOUND COPPER AND ITS SALT AND THE FLUX FROM THE MATERIAL, AND HEATING THE CRYSTALS AT 400-600*C. IN AN OXIDIZING ATMOSPHERE UP TO 15 MINUTES FOR OXIDIZING THE CRYSTAL SURFACES TO A VERY SLIGHT DEGREE.
Claim 2
Independent Claim
105 words
THE METHOD OF PREPARING A PHOTOCONDUCTIVE MATERIAL WHICH COMPRISES MIXING 100 GMS. OF CADMIUM SULFIDE WITH A SOLUTION OF .001-.03 GM. OF A COPPER SALT AND .1-.2 GM. OF AN ALKALI CHLORIDE FLUX, HEATING THE MIXTURE TO A TEMPERATURE OF 800-1150*C. AND IN AN INERT ATMOSPHERE TO CRYSTALLIZE THE CADMIUM SULFIDE AND BIND COPPER INTO THE CRYSTAL LATTICES, CRUSHING THE MATERIAL WITHOUT DESTROYING THE CADMIUM SULFIDE CRYSTAL STRUCTURE, WASHING THE UNBOUND COPPER AND ITS SALT AND THE FLUX FROM THE MATERIAL, AND HEATING THE CRYSTALS AT 400-600*C. IN AN OXIDIZING ATMOSPHERE UP TO 15 MINUTES FOR OXIDIZING THE CRYSTAL SURFACES TO A VERY SLIGHT DEGREE.
References Cited (Backward Citations)
US2651700A
Cited
US2861903A
Cited
US2727865A
Cited
US2755255A
Cited
US2727866A
Cited
US2765385A
Cited
US2884507A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |