US3562033A
Expired / Lapsed
US
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Method of doping silicon with group iii substance
Assignee: ABB Norden Holding AB
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Filing: 1968-02-12
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Granted: 1971-02-09
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Expires: 1988-02-12
Abstract
Abstract METHOD OF DIFFUSING A DOPING SUBSTANCE FROM GROUP III OF THE PERIODIC SYSTEM INTO SILICON DISCS FOR SEMI-CONDUCTOR DEVICES, IN WHICH THE SILICON DISCS ARE SUBJECTED BOTH TO THE ACTION OF VAPOR FROM THE DOPING SUBSTANCE AND TO THE ACTION OF A HALOGEN.
Inventors
- 👤 Juri Jansen
- 👤 Lennart Ryman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:23
CPC Classifications
H; H10; H10P; H10P95/00; C; C30; C30B; C30B31/00; C30B31/06; H10P32/00; H10P32/10; H10P32/12; H10P32/17; H10P32/171; Y; Y10; Y10S; Y10S252/00; Y10S252/95; Y10S252/951; Y10S438/00; Y10S438/909
Claims Analysis
Total Claims: 0
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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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |