Patent US3012316A successfully refreshed from Google Patents.
US3012316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attaching leads to silicon semiconductor devices
Assignee: Clevite Corp
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Filing: 1959-04-13
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Granted: 1961-12-12
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Expires: 1979-04-13
Abstract
No abstract record available.
Inventors
- 👤 Horst W Knau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:47
CPC Classifications
H; H10; H10W; H10W99/00; Y; Y10; Y10S; Y10S228/00; Y10S228/903; Y10S228/904; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49169
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A METHOD OF ATTACHING A LEAD WIRE TO A SILICON SEMICONDUCTOR DEVICE HAVING JUNCTION-FORMING REGION THEREON ALLOYED WITH ALUMINUM, COMPRISING: PLACING IN CONTACT WITH THE JUNCTION-FORMING ALUMINUM-ALLOYED REGION ONE END OF A LEAD WIRE COMPOSED OF A METAL SELECTED FROM THE GROUP CONSISTING OF PLATINUM AND PLATINUM ALLOYS, SUBJECTING THE ASSEMBLY TO AN AMBIENT TEMPERATURE IN THE RANGE OF ABOUT 630 TO 650*C. FOR A RELATIVELY BRIEF PERIOD OF TIME SUFFICIENT TO CAUSE FUSION OF THE OUTERMOST REGIONS OF THE LEAD WIRE AND ALLOYING THEREOF WITH SAID JUNCTIONFORMING REGION BUT WITHOUT FUSION OF THE CORE REGION OF SAID WIRE, AND RAPIDLY COOLING SAID ASSEMBLY.
Claim 2
Independent Claim
104 words
A METHOD OF ATTACHING A LEAD WIRE TO A SILICON SEMICONDUCTOR DEVICE HAVING JUNCTION-FORMING REGION THEREON ALLOYED WITH ALUMINUM, COMPRISING: PLACING IN CONTACT WITH THE JUNCTION-FORMING ALUMINUM-ALLOYED REGION ONE END OF A LEAD WIRE COMPOSED OF A METAL SELECTED FROM THE GROUP CONSISTING OF PLATINUM AND PLATINUM ALLOYS, SUBJECTING THE ASSEMBLY TO AN AMBIENT TEMPERATURE IN THE RANGE OF ABOUT 630 TO 650*C. FOR A RELATIVELY BRIEF PERIOD OF TIME SUFFICIENT TO CAUSE FUSION OF THE OUTERMOST REGIONS OF THE LEAD WIRE AND ALLOYING THEREOF WITH SAID JUNCTIONFORMING REGION BUT WITHOUT FUSION OF THE CORE REGION OF SAID WIRE, AND RAPIDLY COOLING SAID ASSEMBLY.
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) | 1964-12-11 | 1965-06-12 | 1965-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-11 | 1969-06-12 | 1969-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-11 | 1973-06-12 | 1973-12-12 | $7700.00 | Window Closed / Lapsed |