Patent US3717797A successfully refreshed from Google Patents.
US3717797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One piece aluminum electrical contact member for semiconductor devices
Assignee: Westinghouse Electric Corp
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Filing: 1971-03-19
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Granted: 1973-02-20
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Expires: 1991-03-19
Abstract
Abstract A solid one piece electrical contact member is resiliently held in direct physical, electrical, and thermal conductive contact with an electrode affixed to a surface of a body of semiconductor material.
Inventors
- 👤 J Rydeski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:48
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/70; H10W40/77; H10W72/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
96 words
A semiconductor device comprising a body of semiconductor material, said body having at least one region of a first-type of semiconductivity and at least one region of a second-type of semiconductivity with a p-n junction therebetween, an aluminum electrode affixed on a first major surface of said body and in electrical and thermal contact with one of said regions, an aluminum electrical contact disposed on said aluminum electrode, and means for exerting a compressive force upon said aluminum contact whereby it is held in a direct physical electrical and thermally conductive relationship with said aluminum electrode.
Claim 2
Dependent Claim
96 words
A semiconductor device comprising a body of semiconductor material, said body having at least one region of a first-type of semiconductivity and at least one region of a second-type of semiconductivity with a p-n junction therebetween, an aluminum electrode affixed on a first major surface of said body and in electrical and thermal contact with one of said regions, an aluminum electrical contact disposed on said aluminum electrode, and means for exerting a compressive force upon said aluminum contact whereby it is held in a direct physical electrical and thermally conductive relationship with said aluminum electrode.
Claim 3
Dependent Claim
22 words
The device of claim 1 wherein an electrically insulating member is disposed between said aluminum electrical contact and said compressive force means.
Claim 4
Dependent Claim
46 words
The device of claim 2 in which a second metal electrode is affixed to a second major surface of said body, said second electrode being in an electrically conductive relationship with another of said regions, said second major surface being parallel to Said first major surface.
Claim 5
Dependent Claim
17 words
The device of claim 3 in which said second metal electrode is soldered to a case member.
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) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |