Patent US2820932A successfully refreshed from Google Patents.
US2820932A
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Contact structure
Assignee: AT&T Inc
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Filing: 1956-03-07
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Granted: 1958-01-21
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Expires: 1976-03-07
Abstract
No abstract record available.
Inventors
- 👤 Duncan H Looney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:44
CPC Classifications
H; H10; H10W; H10W72/00; C; C30; C30B; C30B23/00; C30B31/00; C30B31/04; C30B31/06; H10D; H10D10/00; H10D30/00; H10D30/80; H10D48/00; H10D48/30; H10D48/32; H10D48/34; H10D48/345; H10D62/00; H10D62/10; H10D62/60; H10D99/00; H10P; H10P32/00; H10P32/10; H10P32/12; H10P32/17; H10P32/171; H10P95/00; H10P95/50; H10W70/00; H10W70/60; H10W70/67; H10W70/69; H10W76/00; H10W76/60; H10W99/00; H10W72/071; H10W72/075; H10W72/07551; H10W72/07554; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/929; Y10S428/9335; Y10S428/934; Y10S428/935; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12528; Y10T428/12674; Y10T428/12701; Y10T428/12771; Y10T428/12861; Y10T428/12896
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
59 words
A DEVICE COMPRISING A BODY OF SEMICONDUCTIVE MATERIAL SELECTED FROM THE GROUP CONSISTING OF SILICON, GERMANIUM AND SILICON-GERMANIUM ALLOYS, AND AN OHMIC CONNECTION ALLOYED THERETO, SAID CONNECTION COMPRISING A METALLIC MEMBER HAVING A COATING COMPRISING AN INNER SILVER LAYER, AN INTERMEDIATE LEAD LAYER AND AN OUTER SILVER LAYER, SAID LEAD AND SILVER FORMING AN ALLOY WITH SAID SEMICONDUCTIVE MATERIAL.
References Cited (Backward Citations)
US2402839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |