US3715241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doped tin telluride brazing material for semiconductive thermoelectric generator elements
Assignee: General Electric Co
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Filing: 1968-10-10
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Granted: 1973-02-06
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Expires: 1988-10-10
Abstract
Abstract LEAD TELLURIDE HAS BEEN BRAZED WITH IODINE DOPED TIN TELLURIDE. IT HAS BEEN FOUND THAT WHEN SEMICONDUCTIVE LEAD TELLURIDE THERMOELECTRIC GENERATOR ELEMENTS ARE BRAZED TO IRON CLAD STAINLESS STELL BRIDGING MEMBERS OF STOICHIOMETRIC TIN TELLURIDE, THERE WAS A GRADUAL DEGRADATION OF THE ELECTRICAL PROPERTIES DURING THE LIFE OF THE GENERATOR. IT IS BELIEVED THAT THIS IS THE RESULT OF MIGRATION OF THE DOPING ELEMENTS FROM THE LEAD TELLURIDE INTO THE TIN TELLURIDE BY SOLID STATE DIFFUSION. THEREFORE, P-TYPE LEAD TELLURIDE HAS BEEN BRAZED WITH SODIUM DOPED TIN TELLURIDE AND N-TYPE
Inventors
- 👤 J Bredt
- 👤 L Kendall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:42
CPC Classifications
H; H10; H10N; H10N10/00; H10N10/80; H10N10/81; H10N10/817
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |