US3141848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the doping of silicon
Assignee: Wacker Chemie AG
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Filing: 1961-06-26
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Granted: 1964-07-21
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Expires: 1981-06-26
Abstract
No abstract record available.
Inventors
- 👤 Enk Eduard
- 👤 Nickl Julius
- 👤 Silbernagl Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:04
CPC Classifications
C; C30; C30B; C30B13/00; C30B13/08; C30B13/10; C30B13/12; H; H10; H10P; H10P95/00; Y; Y10; Y10S; Y10S118/00; Y10S118/90; Y10S252/00; Y10S252/95; Y10S438/00; Y10S438/933
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |