Patent US3118094A successfully refreshed from Google Patents.
US3118094A
Expired / Lapsed
US
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Diffused junction transistor
Assignee: Texas Instruments Inc
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Filing: 1958-09-02
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Granted: 1964-01-14
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Expires: 1978-09-02
Abstract
No abstract record available.
Inventors
- 👤 Cornelison Boyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:43
CPC Classifications
H; H10; H10D; H10D62/00; H10D62/80; H10D62/83; H10D62/834; H10D10/00; H10D99/00; H10P; H10P32/00; H10P32/10; H10P32/12; H10P32/17; H10P32/171; H10P95/00; H10P95/50
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
100 words
A TRANSISTOR COMPRISING A MONOCRYSTALLINE GERMANIUM WAFER, A REGION OF ONE CONDUCTIVITY-TYPE DEFINED BY THE MAJOR PORTION OF SAID WAFER, A THIN DIFFUSED SURFACE LAYER OF THE OPPOSITE CONDUCTIVITY-TYPE DEFINED IN SAID WAFER CONTIGUOUS TO SAID REGION, A PAIR OF WIRES COMPOSED PRINCIPALLY OF GOLD HAVING DIAMETERS OF ABOUT ONE MIL HEAT BONDED AT THEIR ENDS TO SAID SURFACE LAYER AT SPACED POSITIONS, ONE OF SAID WIRES CONTAINING A SMALL AMOUNT OF GALLIUM AND THE OTHER OF SAID WIRES CONTAINING A SMALL AMOUNT OF ANTIMONY WHEREBY EMITTER AND BASE CONTACTS WILL BE PROVIDED, AND A COLLECTOR CONTACT TO SAID REGION.
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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) | 1967-01-13 | 1967-07-15 | 1968-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-13 | 1971-07-15 | 1972-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-13 | 1975-07-15 | 1976-01-14 | $7700.00 | Window Closed / Lapsed |