Patent US3257631A successfully refreshed from Google Patents.
US3257631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid-state semiconductor network
Assignee: Texas Instruments Inc
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Filing: 1960-05-02
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Granted: 1966-06-21
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Expires: 1980-05-02
Abstract
No abstract record available.
Inventors
- 👤 Arthur D Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:13
CPC Classifications
H; H10; H10D; H10D84/00; H10D84/40; H10D84/401; H10D84/403; H10D84/409; H03; H03F; H03F3/00; H03F3/34; H03F3/343; H03F3/347; H10D30/00; H10D30/80; H10D30/83
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE COMPRISING A WAFER OF MONOCRYSTALLINE SEMICONDUCTOR MATERIAL, A PLAURALITY OF CIRCUIT ELEMENTS DEFINED IN THE WAFER ADJACENT ONE MAJOR FACE THEREOF, SAID CIRCUIT ELEMENTS INCLUDING A UNIPOLAR FIELD-EFFECT DEVICE HAVING A THIN CHANNEL REGION AND A GATE REGION PROVIDED BY CONTIGUOUS LAYERS OF SEMICONDUCTOR MATERIAL OF OPPOSITE CONDUCTIVITYTYPES, THE REGION SEPARATING THE CHANNEL REGION INTO A SOURCE AND A DRAIN WHICH ARE CONNECTED TOGETHER WITHIN THE WAFER ONLY BY A THIN PORTION OF THE CHANNEL REGION UNDERLYING THE GATE REGION, VOLTAGE REFERENCE MEANS DEFINED IN THE WAFER ADJACENT SAID ONE MAJOR FACE BY CONTIGUOUS REGIONS OF OPPOSITE CONDUCTIVITY-TYPES, AND MEANS CONNECTING THE VOLTAGE REFERENCE MEANS ACROSS THE SOURCE AND GATE REGION OF THE FIELD-EFFECT DEVICE SO THAT THE CHANNEL REGION OF THE FIELD-EFFECT DEVICE WILL PROVIDE A LARGE RESISTANCE.
Claim 2
Dependent Claim
134 words
A SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE COMPRISING A WAFER OF MONOCRYSTALLINE SEMICONDUCTOR MATERIAL, A PLAURALITY OF CIRCUIT ELEMENTS DEFINED IN THE WAFER ADJACENT ONE MAJOR FACE THEREOF, SAID CIRCUIT ELEMENTS INCLUDING A UNIPOLAR FIELD-EFFECT DEVICE HAVING A THIN CHANNEL REGION AND A GATE REGION PROVIDED BY CONTIGUOUS LAYERS OF SEMICONDUCTOR MATERIAL OF OPPOSITE CONDUCTIVITYTYPES, THE REGION SEPARATING THE CHANNEL REGION INTO A SOURCE AND A DRAIN WHICH ARE CONNECTED TOGETHER WITHIN THE WAFER ONLY BY A THIN PORTION OF THE CHANNEL REGION UNDERLYING THE GATE REGION, VOLTAGE REFERENCE MEANS DEFINED IN THE WAFER ADJACENT SAID ONE MAJOR FACE BY CONTIGUOUS REGIONS OF OPPOSITE CONDUCTIVITY-TYPES, AND MEANS CONNECTING THE VOLTAGE REFERENCE MEANS ACROSS THE SOURCE AND GATE REGION OF THE FIELD-EFFECT DEVICE SO THAT THE CHANNEL REGION OF THE FIELD-EFFECT DEVICE WILL PROVIDE A LARGE RESISTANCE.
References Cited (Backward Citations)
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US2744970A
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US2805397A
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US2754431A
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US2984752A
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US2900531A
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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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |