US3725284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing oxygen poor gallium arsenide by using aluminum with silicon or germanium as a dopant
Assignee: Siemens AG
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Filing: 1971-04-28
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Granted: 1973-04-03
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Expires: 1991-04-28
Abstract
Abstract The invention relates to a method of producing oxygen poor gallium arsenide with silicon or germanium as a dopant. An element of the III group of the Periodic System, particularly aluminum, is added to the gallium arsenide containing melt for gettering the oxygen. The invention is particularly suited for the production of gallium arsenide, which is processed into luminescence diodes.
Inventors
- 👤 W Touchy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:49
CPC Classifications
C; C30; C30B; C30B11/00; C30B29/00; C30B29/10; C30B29/40; C30B29/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3278342A
Cited
US3560275A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |