Patent US3556732A successfully refreshed from Google Patents.
US3556732A
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Apparatus for the thermal treatment of a semiconductor material having a volatile component
Assignee: Westinghouse Electric Corp
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Filing: 1968-01-31
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Granted: 1971-01-19
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Expires: 1988-01-31
Abstract
Abstract A SEMICONDUCTOR MATERIAL HAVING A VOLATILE COMPONENT IS THERMALLY TREATED IN AN AMBIENT FORMED BY A GASEOUS MIXTURE WHICH CONSTANTLY MAINTAINS THE STOICHIOMETRY OF THE SEMICONDUCTOR MATERIAL DURING THE THERMAL TREATMENT.
Inventors
- 👤 Hung Chi Chang
- 👤 Ting Li Chu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:35
CPC Classifications
C; C30; C30B; C30B15/00; C30B15/02; C30B29/00; C30B29/10; C30B29/40; Y; Y10; Y10S; Y10S117/00; Y10S117/906; Y10S148/00; Y10S148/041; Y10S148/107; Y10T; Y10T117/00; Y10T117/10; Y10T117/1016; Y10T117/1024; Y10T117/1032
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |