Patent US2809332A successfully refreshed from Google Patents.
US2809332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power semiconductor devices
Assignee: RCA Corp
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Filing: 1953-07-29
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Granted: 1957-10-08
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Expires: 1973-07-29
Abstract
No abstract record available.
Inventors
- 👤 Ralph L Sherwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:11
CPC Classifications
H; H10; H10W; H10W74/00; H10W74/10; H10W74/131; H10W40/00; H10W40/70; H10W72/00; H10W72/851; H10W76/00; H10W76/40; H10W76/42; H10W76/47
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A SEMICONDUCTOR DEVICE COMPRISING A BODY OF SEMICONDUCTOR MATERIAL, EMITTER AND COLLECTOR AND BASE ELECTRODES MOUNTED IN OPERATIVE RELATION WITH SAID BODY, A FIRST QUANTITY OF HEAT-CONDUCTING AND ELECTRICALLY-CONDUCTING MATERIAL SURROUNDING AND EMBEDDING A PORTION OF SAID BODY AND MAKING ELECTRICAL CONTACT WITH ONE OF SAID ELECTRODES, SAID BODY BEING INSULATED FROM SAID FIRST QUANTITY OF MATERIAL, ANOTHER QUANTITY OF HEAT-CONDUCTING, ELECTRICALLY-INSULATING MATERIAL SURROUNDING AND EMBEDDING THE REMAINDER OF SAID BODY AND SAID ELECTRODES, SAID QUANTITES OF MATERIAL COMPRISING A UNITARY EMBEDDING MEDIUM,
Claim 2
Dependent Claim
83 words
A SEMICONDUCTOR DEVICE COMPRISING A BODY OF SEMICONDUCTOR MATERIAL, EMITTER AND COLLECTOR AND BASE ELECTRODES MOUNTED IN OPERATIVE RELATION WITH SAID BODY, A FIRST QUANTITY OF HEAT-CONDUCTING AND ELECTRICALLY-CONDUCTING MATERIAL SURROUNDING AND EMBEDDING A PORTION OF SAID BODY AND MAKING ELECTRICAL CONTACT WITH ONE OF SAID ELECTRODES, SAID BODY BEING INSULATED FROM SAID FIRST QUANTITY OF MATERIAL, ANOTHER QUANTITY OF HEAT-CONDUCTING, ELECTRICALLY-INSULATING MATERIAL SURROUNDING AND EMBEDDING THE REMAINDER OF SAID BODY AND SAID ELECTRODES, SAID QUANTITES OF MATERIAL COMPRISING A UNITARY EMBEDDING MEDIUM,
References Cited (Backward Citations)
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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) | 1960-10-07 | 1961-04-08 | 1961-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-07 | 1965-04-08 | 1965-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-07 | 1969-04-08 | 1969-10-08 | $7700.00 | Window Closed / Lapsed |