US3136932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Matched seal header
Assignee: Texas Instruments Inc
•
Filing: 1959-10-23
•
Granted: 1964-06-09
•
Expires: 1979-10-23
Abstract
No abstract record available.
Inventors
- 👤 Robert L Trent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:50
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/70; C; C03; C03C; C03C27/00; C03C27/04; C03C27/042; H10P; H10P95/00; H10W72/00; H10W72/20; H10W76/00; H10W76/10; H10W76/12; H10W76/13; H10W76/132; H10W76/161
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A HEADER UNIT FOR A TRANSISTOR DEVICE COMPRISING A DISH-SHAPED METAL SHELL, INSULATING DIELECTRIC MATERIAL ENCLOSED WITHIN SAID SHELL, A PAIR OF LEAD WIRES PASSING THROUGH SAID INSULATING MATERIAL AND SAID SHELL, A THIRD LEAD WIR PASSING THROUGH SAID INSULATING MATERIAL AND CONNECTED TO SAID SHELL, AND A METALLIC TAB INTEGRAL WITH SAID SHELL AND PROJECTING UPWARD THEREFROM TO FORM ONE ELECTRODE FOR THE WAFER OF SAID TRANSISTOR DEVICE, SAID DISHSHAPED METAL SHELL HAVING APERTURES IN ONE SURFACE THEREOF THROUGH WHICH SAID PAIR OF LEAD WIRES PASS AND HAVING AN INNER LAYER OF METAL HAVING SUBSTANTIALLY THE SAME COEFFICIENT OF THERMAL EXPANSION AS SAID INSULATING MATERIAL AND AN OUTER LAYER OF MEATL WHOSE THERMAL CONDUCTIVITY IS HIGHER THAN THAT OF SAID INNER LAYER, AND FURTHER HAVING AN ETCH RESISTANT METALLIC PLATING SUPER-IMPOSED UPON SAID OUTER LAYER, SAID INSULATING MATERIAL BEING BONDED TO SAID INNER LAYER OF SAID METALLIC SHELL AND FORMING INSULATING BUSHINGS IN SAID APERTURES IN SAID SHELL THROUGH WHICH SAID PAIR OF LEAD WIRES PASS.
Claim 2
Dependent Claim
167 words
A HEADER UNIT FOR A TRANSISTOR DEVICE COMPRISING A DISH-SHAPED METAL SHELL, INSULATING DIELECTRIC MATERIAL ENCLOSED WITHIN SAID SHELL, A PAIR OF LEAD WIRES PASSING THROUGH SAID INSULATING MATERIAL AND SAID SHELL, A THIRD LEAD WIR PASSING THROUGH SAID INSULATING MATERIAL AND CONNECTED TO SAID SHELL, AND A METALLIC TAB INTEGRAL WITH SAID SHELL AND PROJECTING UPWARD THEREFROM TO FORM ONE ELECTRODE FOR THE WAFER OF SAID TRANSISTOR DEVICE, SAID DISHSHAPED METAL SHELL HAVING APERTURES IN ONE SURFACE THEREOF THROUGH WHICH SAID PAIR OF LEAD WIRES PASS AND HAVING AN INNER LAYER OF METAL HAVING SUBSTANTIALLY THE SAME COEFFICIENT OF THERMAL EXPANSION AS SAID INSULATING MATERIAL AND AN OUTER LAYER OF MEATL WHOSE THERMAL CONDUCTIVITY IS HIGHER THAN THAT OF SAID INNER LAYER, AND FURTHER HAVING AN ETCH RESISTANT METALLIC PLATING SUPER-IMPOSED UPON SAID OUTER LAYER, SAID INSULATING MATERIAL BEING BONDED TO SAID INNER LAYER OF SAID METALLIC SHELL AND FORMING INSULATING BUSHINGS IN SAID APERTURES IN SAID SHELL THROUGH WHICH SAID PAIR OF LEAD WIRES PASS.
References Cited (Backward Citations)
US2947925A
Cited
US2934588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |