US3374176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making n-type zinc cadmium sulfide electroluminescent material
Assignee: General Electric Co
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Filing: 1965-01-04
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Granted: 1968-03-19
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Expires: 1985-01-04
Abstract
No abstract record available.
Inventors
- 👤 Ralph M Potter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:03
CPC Classifications
H; H10; H10H; H10H20/00; H10H20/01; H10H20/011; H10H20/013
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
THE METHOD OF PREPARING A ZINC-CADMIUM SULFOSELENIDE WIDE BAND GAP SEMICONDUCING PHOSPHOR HAVING HIGH AND PREDOMINANTLY N-TYPE CONDUCTIVITY AND EMISSION BANDS IN THE VISIBLE SPECTRUM AND BEING SUITABLE FOR INJECTION ELECTROLUMINESCENCE COMPRISING PREPARING A SOLID SOLUTION OF ZNS WITH CDS CONTAINING FROM ABOUT 0.3 TO ABOUT 0.6 MOL OF ZN PER TOTAL MOLS OF ZN PLUS CD AND WHEREIN THE S MAY BE PARTLY SUBSTITUTED WITH SE, ADDING THERETO 10**-4 MOL FRACTION OF GALLIUM, FIRING IN H2S AT A TEMPERATURE IN THE RANGE OF 750 TO 900*C., AND THEN REFIRING IN VACUO IN THE PRESENCE OF MADMIUM AT A TEMPERATURE IN THE RANGE OF 750 TO 900*C.
Claim 2
Independent Claim
107 words
THE METHOD OF PREPARING A ZINC-CADMIUM SULFOSELENIDE WIDE BAND GAP SEMICONDUCING PHOSPHOR HAVING HIGH AND PREDOMINANTLY N-TYPE CONDUCTIVITY AND EMISSION BANDS IN THE VISIBLE SPECTRUM AND BEING SUITABLE FOR INJECTION ELECTROLUMINESCENCE COMPRISING PREPARING A SOLID SOLUTION OF ZNS WITH CDS CONTAINING FROM ABOUT 0.3 TO ABOUT 0.6 MOL OF ZN PER TOTAL MOLS OF ZN PLUS CD AND WHEREIN THE S MAY BE PARTLY SUBSTITUTED WITH SE, ADDING THERETO 10**-4 MOL FRACTION OF GALLIUM, FIRING IN H2S AT A TEMPERATURE IN THE RANGE OF 750 TO 900*C., AND THEN REFIRING IN VACUO IN THE PRESENCE OF MADMIUM AT A TEMPERATURE IN THE RANGE OF 750 TO 900*C.
References Cited (Backward Citations)
US2947705A
Cited
US3010909A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |