US2692839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating germanium bodies
Assignee: AT&T Inc
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Filing: 1951-03-07
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Granted: 1954-10-26
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Expires: 1971-03-07
Abstract
No abstract record available.
Inventors
- 👤 Christensen Howard
- 👤 Gordon K Teal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:03
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/70; H01M4/76; H01M4/762; C; C30; C30B; C30B25/00; C30B25/02; C30B29/00; C30B29/02; C30B29/08; H10; H10P; H10P14/00; H10P14/20; H10P14/24; H10P14/29; H10P14/2901; H10P14/2902; H10P14/2905; H10P14/34; H10P14/3402; H10P14/3404; H10P14/3411; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10S; Y10S118/00; Y10S118/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
THE METHOD OF FORMING A LAYER OF GERMANIUM UPON A BODY OF GERMANIUM WHICH COMPRISES MOUNTING SAID BODY IN A CHAMBER, PASSING OVER SAID BODY A MIXTURE OF HYDROGEN, GERMANIUM HALIDE AND AN IMPURITY DETERMINING A CONDUCTIVITY TYPE OPPOSITE TO THAT OF SAID BODY, IN GAS FORM, AND HEATING SAID CHAMBER TO THERMALLY DECOMPOSE SAID HALIDE.
Claim 2
Independent Claim
56 words
THE METHOD OF FORMING A LAYER OF GERMANIUM UPON A BODY OF GERMANIUM WHICH COMPRISES MOUNTING SAID BODY IN A CHAMBER, PASSING OVER SAID BODY A MIXTURE OF HYDROGEN, GERMANIUM HALIDE AND AN IMPURITY DETERMINING A CONDUCTIVITY TYPE OPPOSITE TO THAT OF SAID BODY, IN GAS FORM, AND HEATING SAID CHAMBER TO THERMALLY DECOMPOSE SAID HALIDE.
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) | 1957-10-25 | 1958-04-26 | 1958-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-10-25 | 1962-04-26 | 1962-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-10-25 | 1966-04-26 | 1966-10-26 | $7700.00 | Window Closed / Lapsed |