Patent US2552626A successfully refreshed from Google Patents.
US2552626A
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Silicon-germanium resistor and method of making it
Assignee: AT&T Inc
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Filing: 1948-02-17
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Granted: 1951-05-15
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Expires: 1968-02-17
Abstract
No abstract record available.
Inventors
- 👤 Joseph R Fisher
- 👤 Gordon K Teal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:24
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/06; H01C17/075; H01C17/14; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12611; Y10T428/12674
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A RESISTOR COMPRISING A CERAMIC SUPPORT, A THIN FILM ON SAID SUPPORT OF A MATERIAL CONSISTING OF A MIXTURE OF SILICON AND GERMANIUM, AND SPACED ELECTRICAL CONNECTING MEANS SECURED TO SAID FILM, THE GERMANIUM CONSTITUTING FROM OF THE ORDER OF 2 TO THE ORDER OF 18 PER CENT BY WEIGHT OF THE FILM.
Claim 2
Dependent Claim
53 words
A RESISTOR COMPRISING A CERAMIC SUPPORT, A THIN FILM ON SAID SUPPORT OF A MATERIAL CONSISTING OF A MIXTURE OF SILICON AND GERMANIUM, AND SPACED ELECTRICAL CONNECTING MEANS SECURED TO SAID FILM, THE GERMANIUM CONSTITUTING FROM OF THE ORDER OF 2 TO THE ORDER OF 18 PER CENT BY WEIGHT OF THE FILM.
References Cited (Backward Citations)
US978022A
Cited
US1497417A
Cited
US1739256A
Cited
US1964322A
Cited
US2022314A
Cited
US2439654A
Cited
US2472770A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |