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Patent US2937439A successfully refreshed from Google Patents.
US2937439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making ohmic connections to semiconductor devices
Assignee: Texas Instruments Inc
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Filing: 1956-11-21
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Granted: 1960-05-24
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Expires: 1976-11-21
Abstract
No abstract record available.
Inventors
- 👤 May Charlotte Z Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:03
CPC Classifications
H; H01; H01B; H01B1/00; H10; H10P; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A METHOD OF ATTACHING AN ELECTRICAL CONNECTION TO A SILICON SEMICONDUCTOR ELEMENT THAT COMPRISES MAINTAINING AT A TEMPERATURE SLIGHTLY ABOVE ITS FREEZING POINT AN ALLOY CONSISTING ESSENTIALLY OF 75% TO 90% GOLD AND 10% TO 25% TIN, DIPPING A PORTION OF THE SILICON SEMICONDUCTOR ELEMENT BRIEFLY INTO SAID ALLOY TO ALLOW A COAT-
Claim 2
Independent Claim
53 words
A METHOD OF ATTACHING AN ELECTRICAL CONNECTION TO A SILICON SEMICONDUCTOR ELEMENT THAT COMPRISES MAINTAINING AT A TEMPERATURE SLIGHTLY ABOVE ITS FREEZING POINT AN ALLOY CONSISTING ESSENTIALLY OF 75% TO 90% GOLD AND 10% TO 25% TIN, DIPPING A PORTION OF THE SILICON SEMICONDUCTOR ELEMENT BRIEFLY INTO SAID ALLOY TO ALLOW A COAT-
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) | 1963-05-24 | 1963-11-23 | 1964-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-24 | 1967-11-23 | 1968-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-24 | 1971-11-23 | 1972-05-24 | $7700.00 | Window Closed / Lapsed |