Patent US3302658A successfully refreshed from Google Patents.
Patent US2793146A successfully refreshed from Google Patents.
US2793146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of treating germanium
Assignee: GTE Sylvania Inc
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Filing: 1954-03-10
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Granted: 1957-05-21
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Expires: 1974-03-10
Abstract
No abstract record available.
Inventors
- 👤 Crane Horace Irving
- 👤 Wang Pei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:49
CPC Classifications
C; C23; C23F; C23F1/00; H; H10; H10P; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
THE METHOD OF MAKING SEMICONDUCTOR TANSLATORS, INCLUDING THE STEPS OF SUBDIVIDING A GERMANIUM INGOT INTO INDIVIDUAL UNITS AND SUBJECTING SUCH UNITS TO PROLONGED TREATMENT IN A MOLTEN ALKALI METAL CYANIDE MAINTAINED AT A TEMPERATURE BELOW THE MELTING POINT OF GERMANIUM.
Claim 2
Independent Claim
40 words
THE METHOD OF MAKING SEMICONDUCTOR TANSLATORS, INCLUDING THE STEPS OF SUBDIVIDING A GERMANIUM INGOT INTO INDIVIDUAL UNITS AND SUBJECTING SUCH UNITS TO PROLONGED TREATMENT IN A MOLTEN ALKALI METAL CYANIDE MAINTAINED AT A TEMPERATURE BELOW THE MELTING POINT OF GERMANIUM.
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) | 1960-05-20 | 1960-11-19 | 1961-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-20 | 1964-11-19 | 1965-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-20 | 1968-11-19 | 1969-05-21 | $7700.00 | Window Closed / Lapsed |