Patent US3931635A successfully refreshed from Google Patents.
US3931635A
Expired / Lapsed
US
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Semiconductor device with a control electrode in pressure contact with the semiconductor disc
Assignee: ABB Norden Holding AB
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Filing: 1974-05-07
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Granted: 1976-01-06
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Expires: 1994-05-07
Abstract
Abstract A semiconductor device is formed of a box having a bottom and a lid, formed of metallic material and each maintaining an electrical contact with one side of the semiconductor disc. The bottom and lid are each connected to a ring of insulating material. A metal ring is positioned between and secured to the rings of insulating material. A control electrode is secured at its ends to the metal ring and extends substantially diametrically thereacross. The control electrode has a projecting contact part which is in engagement with one side of the semiconductor disc and is of such height as to be held by the control electrode in pressure contact with such side.
Inventors
- 👤 Dan Sundstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:08
CPC Classifications
H; H10; H10W; H10W76/00; H10W76/10; H10W76/12; H10W76/13; H10W76/138
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
111 words
A semiconductor device comprising a semiconductor disc, a box having a bottom member and a lid member, said members being formed of a metallic material and each being in electrical contact with one side of the semiconductor disc, two rings of rigid insulating material to which said members are secured, a metal ring between and secured to said rings, and a control electrode secured at its ends to said metal ring and extending substantially diametrically thereacross, said control electrode having a projecting contact part in engagement with one side of the semiconductor disc and of such height as to be held by the control electrode in pressure contact with such side.
Claim 2
Dependent Claim
111 words
A semiconductor device comprising a semiconductor disc, a box having a bottom member and a lid member, said members being formed of a metallic material and each being in electrical contact with one side of the semiconductor disc, two rings of rigid insulating material to which said members are secured, a metal ring between and secured to said rings, and a control electrode secured at its ends to said metal ring and extending substantially diametrically thereacross, said control electrode having a projecting contact part in engagement with one side of the semiconductor disc and of such height as to be held by the control electrode in pressure contact with such side.
Claim 3
Dependent Claim
44 words
A semiconductor as claimed in claim 1, in which said control electrode is bent out of the plane of the metal ring on the side away from the semiconductor disc by the engagement of said projecting contact point with the side of the disc.
Claim 4
Dependent Claim
26 words
A semiconductor device as claimed in claim 1, in which the metal ring and the control electrode are formed of an integral piece of sheet metal.
References Cited (Backward Citations)
GB1064522A
Cited
JPS434818Y1
Cited
US3437887A
Cited
US3536966A
Cited
US3599057A
Cited
US3673308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-05 | 1979-07-07 | 1980-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-05 | 1983-07-07 | 1984-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-05 | 1987-07-07 | 1988-01-06 | $7700.00 | Window Closed / Lapsed |