US2980500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the preparation of semiconductor cadmium compounds
Assignee: Monsanto Chemicals Ltd
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Filing: 1958-04-25
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Granted: 1961-04-18
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Expires: 1978-04-25
Abstract
No abstract record available.
Inventors
- 👤 Miller Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:12
CPC Classifications
C; C01; C01G; C01G11/00; C01B; C01B19/00; C01B19/007; H; H10; H10P; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
METHOD FOR THE PRODUCTION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF CADMIUM SULFIDE, CADMIUM SELENDINE AND CADMIUM TELLURIDE WHICH COMPRISES REACTING CADMIUM METAL IN THE VAPOR PHASE WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKYL METCAPTANS, ALKYL SULFIDES, ALKYL DISULFIDES, ALKYL SELENOLS, ALKYL AND ALKYL DITELLURIDES, IN WHICH EACH ALKYL RADICAL HAS LESS THAN 4 CARBON ATOMS, AND IN WHICH THE TEMPERATURE IS MAINTAINED WITHIN THE RANGE OF FROM 800*C. TO 1000*C.
Claim 2
Dependent Claim
76 words
METHOD FOR THE PRODUCTION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF CADMIUM SULFIDE, CADMIUM SELENDINE AND CADMIUM TELLURIDE WHICH COMPRISES REACTING CADMIUM METAL IN THE VAPOR PHASE WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKYL METCAPTANS, ALKYL SULFIDES, ALKYL DISULFIDES, ALKYL SELENOLS, ALKYL AND ALKYL DITELLURIDES, IN WHICH EACH ALKYL RADICAL HAS LESS THAN 4 CARBON ATOMS, AND IN WHICH THE TEMPERATURE IS MAINTAINED WITHIN THE RANGE OF FROM 800*C. TO 1000*C.
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) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |