US3290564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor device
Assignee: Texas Instruments Inc
•
Filing: 1963-02-26
•
Granted: 1966-12-06
•
Expires: 1983-02-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Elmer A Wolff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:44
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/70; H10W40/77; H10W40/778; H10W72/00; H10W72/20; H10W76/00; H10W76/10; H10W76/12; H10W76/15; H10W76/153
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A SEMICONDUCTOR POWER DEVICE COMPRISING (A) A BASE OF INSULATING MATERIAL, (B) A HEAT SINK HAVING A FLAT SURFACE, (C) A SEMICONDUCTOR UNIT MOUNTED IN THERMAL CONTACT WITH A SURFACE OF SAID HEAT SINK SUBSTANTIALLY OPPOSITE SAID FLAT SURFACE, (D) AT LEAST A PORTION OF THE BODY OF SAID HEAT SINK BEING SURROUNDINGLY SEALED IN SAID BASE WITH SAID FLAT SURFACE BEING EXPOSED, (E) MEANS ENCLOSING SAID SEMICONDUCTOR UNIT, AND (F) ELECTRICALLY CONDUCTING MEANS SEALED IN AND PROTRUDING FROM SAID BASE MAKING ELECTRICAL CONNECTIONS TO THE ACTIVE REGIONS OF SAID SEMICONDUCTOR UNIT, (G) SAID BASE ADAPTED FOR BEING SECURED TO A MEMBER THAT INCLUDES A THERMALLY CONDUCTING SURFACE IN THERMAL CONTACT WITH SAID FLAT EXPOSED SURFACE.
Claim 2
Dependent Claim
116 words
A SEMICONDUCTOR POWER DEVICE COMPRISING (A) A BASE OF INSULATING MATERIAL, (B) A HEAT SINK HAVING A FLAT SURFACE, (C) A SEMICONDUCTOR UNIT MOUNTED IN THERMAL CONTACT WITH A SURFACE OF SAID HEAT SINK SUBSTANTIALLY OPPOSITE SAID FLAT SURFACE, (D) AT LEAST A PORTION OF THE BODY OF SAID HEAT SINK BEING SURROUNDINGLY SEALED IN SAID BASE WITH SAID FLAT SURFACE BEING EXPOSED, (E) MEANS ENCLOSING SAID SEMICONDUCTOR UNIT, AND (F) ELECTRICALLY CONDUCTING MEANS SEALED IN AND PROTRUDING FROM SAID BASE MAKING ELECTRICAL CONNECTIONS TO THE ACTIVE REGIONS OF SAID SEMICONDUCTOR UNIT, (G) SAID BASE ADAPTED FOR BEING SECURED TO A MEMBER THAT INCLUDES A THERMALLY CONDUCTING SURFACE IN THERMAL CONTACT WITH SAID FLAT EXPOSED SURFACE.
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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |