Patent US3153731A successfully refreshed from Google Patents.
US3153731A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor solid circuit including at least two transistors and zener diodes formed therein
Assignee: Merck and Co Inc
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Filing: 1962-02-26
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Granted: 1964-10-20
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Expires: 1982-02-26
Abstract
No abstract record available.
Inventors
- 👤 Donald J Shombert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:02
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/34; H03F3/343; H10; H10D; H10D88/00; H10P; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A SEMICONDUCTOR SOLID CIRCUIT COMPRISING A SUBSTRATE OF SEMICONDUCTOR MATERIAL; AT LEAST TWO JUNCTION TRANSISTORS EACH HAVING AN EMITTER, A COLLECTOR AND A BASE; FIRST AND SECOND SINGLE CRYSTALLINE SEMICONDUCTOR RESISTORS AFFIXED TO THE EMITTERS RESPECTIVELY OF SAID TRANSISTORS AND TO SAID SUBSTRATE; A LAYER OF SEMICONDUCTOR MATERIAL CRYSTALLOGRAPHICALLY INTERCONNECTED TO THE COLLECTOR OF ONE OF SAID TRANSISTORS AND FORMING A SHARP P-N JUNCTION THEREWITH; AND A CONDUCTIVE CONNECTION DIRECTLY BETWEEN SAID LAYER AND THE BASE OF THE OTHER TRANSISTORS.
Claim 2
Dependent Claim
80 words
A SEMICONDUCTOR SOLID CIRCUIT COMPRISING A SUBSTRATE OF SEMICONDUCTOR MATERIAL; AT LEAST TWO JUNCTION TRANSISTORS EACH HAVING AN EMITTER, A COLLECTOR AND A BASE; FIRST AND SECOND SINGLE CRYSTALLINE SEMICONDUCTOR RESISTORS AFFIXED TO THE EMITTERS RESPECTIVELY OF SAID TRANSISTORS AND TO SAID SUBSTRATE; A LAYER OF SEMICONDUCTOR MATERIAL CRYSTALLOGRAPHICALLY INTERCONNECTED TO THE COLLECTOR OF ONE OF SAID TRANSISTORS AND FORMING A SHARP P-N JUNCTION THEREWITH; AND A CONDUCTIVE CONNECTION DIRECTLY BETWEEN SAID LAYER AND THE BASE OF THE OTHER TRANSISTORS.
References Cited (Backward Citations)
US3083302A
Cited
US3040195A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-20 | 1968-04-20 | 1968-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-20 | 1972-04-20 | 1972-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-20 | 1976-04-20 | 1976-10-20 | $7700.00 | Window Closed / Lapsed |