Patent US3256469A successfully refreshed from Google Patents.
US3256469A
Expired / Lapsed
US
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Transistor assembly in a heat dissipating casing
Assignee: Telefunken AG
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Filing: 1960-09-29
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Granted: 1966-06-14
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Expires: 1980-09-29
Abstract
No abstract record available.
Inventors
- 👤 Neuber Karl
- 👤 Heise Gunther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:23
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/10; H10W40/70; H10W76/00; H10W76/10; H10W76/12; H10W76/161
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A TRANSISTOR ASSEMBLY COMPRISING IN COMBINATION: A CASING; A HEAT-CONDUCTIVE CARRIER BASE WITHIN SAID CASING; A TRANSISTOR HAVING A SEMICONDUCTOR BODY CONSTITUTING ONE TRANSISTOR REGION AND AT LEAST TWO ELECTRODES CARRIED ON RESPECTIVE OPPOSITE SIDES OF SAID SEMICONDUCTOR BODY AND CONSTITUTING TWO OTHER TRANSISTOR REGIONS, SAID TRANSISTOR BEING MOUNTED IN SAID BASE SO THAT SAID BASE DIRECTLY CONTACTS SAID SEMICONDUCTOR BODY AND IS ISOLATED FROM SAID ELECTRODES, AND A HEAT-CONDUCTIVE MATERIAL WHICH REMAINS PLASTIC AT ROOM TEMPERATURES POSITIONED BETWEEN SAID CASING AND SAID BASE FOR CONDUCTING HEAT GENERATED IN SAID SEMICONDUCTOR BODY FROM SAID BASE TO SAID CASING.
Claim 2
Dependent Claim
98 words
A TRANSISTOR ASSEMBLY COMPRISING IN COMBINATION: A CASING; A HEAT-CONDUCTIVE CARRIER BASE WITHIN SAID CASING; A TRANSISTOR HAVING A SEMICONDUCTOR BODY CONSTITUTING ONE TRANSISTOR REGION AND AT LEAST TWO ELECTRODES CARRIED ON RESPECTIVE OPPOSITE SIDES OF SAID SEMICONDUCTOR BODY AND CONSTITUTING TWO OTHER TRANSISTOR REGIONS, SAID TRANSISTOR BEING MOUNTED IN SAID BASE SO THAT SAID BASE DIRECTLY CONTACTS SAID SEMICONDUCTOR BODY AND IS ISOLATED FROM SAID ELECTRODES, AND A HEAT-CONDUCTIVE MATERIAL WHICH REMAINS PLASTIC AT ROOM TEMPERATURES POSITIONED BETWEEN SAID CASING AND SAID BASE FOR CONDUCTING HEAT GENERATED IN SAID SEMICONDUCTOR BODY FROM SAID BASE TO SAID CASING.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |