US2850412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing germaniumindium alloyed junctions
Assignee: GTE Sylvania Inc
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Filing: 1954-08-13
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Granted: 1958-09-02
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Expires: 1974-08-13
Abstract
No abstract record available.
Inventors
- 👤 Maynard H Dawson
- 👤 Rasmanis Egons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:54
CPC Classifications
C; C30; C30B; C30B31/00; C30B31/04; H; H10; H10P; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
THE METHOD OF WETTING WITH METAL A SEMI-CONDUCTOR FROM THE GROUP CONSISTING OF GERMANIUM AND SILICON IN VACUUM, SAID METHOD COMPRISING THE STEP OF PROVIDING AN ATMOSPHERE OF HYDROGEN AT A PRESSURE BETWEEN ABOUT 10**3 AND 10**4 MILLIMETERS OF MERCURY AROUND THE JUNCTION OF SAID METAL AND SAID SEMICONDUCTOR, SAID METAL BEING MAINTAINED IN MOLTEN FORM.
Claim 2
Independent Claim
56 words
THE METHOD OF WETTING WITH METAL A SEMI-CONDUCTOR FROM THE GROUP CONSISTING OF GERMANIUM AND SILICON IN VACUUM, SAID METHOD COMPRISING THE STEP OF PROVIDING AN ATMOSPHERE OF HYDROGEN AT A PRESSURE BETWEEN ABOUT 10**3 AND 10**4 MILLIMETERS OF MERCURY AROUND THE JUNCTION OF SAID METAL AND SAID SEMICONDUCTOR, SAID METAL BEING MAINTAINED IN MOLTEN FORM.
References Cited (Backward Citations)
US2404157A
Cited
US2597028A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |