US3193740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor device
Assignee: NEC Corp
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Filing: 1962-08-22
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Granted: 1965-07-06
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Expires: 1982-08-22
Abstract
No abstract record available.
Inventors
- 👤 Osafune Hiroe
- 👤 Sasaki Ichiemon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:41
CPC Classifications
H; H10; H10D; H10D84/00; H10D84/60; H10D84/611; H10D84/613; H10D99/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A UNITARY SEMICONDUCTOR WAFER COMPRISING AN OUTER REGION OF ONE CONDUCTIVITY TYPE HAVING A GIVEN RESISTIVITY AND AN INNER REGION OF OPPOSITE CONDUCTIVITY TYPE TOTALLY ENCLOSED WITHIN SAID OUTER REGION, SAID INNER REGION BEING GENERALLY IN THE SHAPE OF A WAFER, A PAIR OF TERMINAL AREA CONTACTS DISPOSED ON GENERALLY OPPOSED SURFACES OF SAID OUTER REGION, SAID CONTACTS BEING ARRANGED GENERALLY TRANSVERSE TO THE LONGITUDINAL PLANE OF SAID WAFER, THE RESISTANCE OF THE PORTIONS OF SAID OUTER REGION BETWEEN SAID TERMINAL AREA CONTACTS AND THE CORRESPONDING END AREAS OF SAID INNER REGION BEING GREATER THAN THE RESISTANCE OF THE PORTIONS OF SAID OUTER RERION BETWEEN THE WAFER MAJOR SURFACES AND THE CORRESPONDING SURFACES OF SAID INNER REGION, AND SAID INNER REGION HAVING A PREDETERMINED SIZE AND POSITION WITH RESPECT TO SAID OUTER REGION TO PRODUCE PREDETERMINED ELECTRICAL CHARACTERISTICS OF RESISTANCE AND CAPACITANCE BETWEEN SAID CONTACTS.
Claim 2
Dependent Claim
145 words
A UNITARY SEMICONDUCTOR WAFER COMPRISING AN OUTER REGION OF ONE CONDUCTIVITY TYPE HAVING A GIVEN RESISTIVITY AND AN INNER REGION OF OPPOSITE CONDUCTIVITY TYPE TOTALLY ENCLOSED WITHIN SAID OUTER REGION, SAID INNER REGION BEING GENERALLY IN THE SHAPE OF A WAFER, A PAIR OF TERMINAL AREA CONTACTS DISPOSED ON GENERALLY OPPOSED SURFACES OF SAID OUTER REGION, SAID CONTACTS BEING ARRANGED GENERALLY TRANSVERSE TO THE LONGITUDINAL PLANE OF SAID WAFER, THE RESISTANCE OF THE PORTIONS OF SAID OUTER REGION BETWEEN SAID TERMINAL AREA CONTACTS AND THE CORRESPONDING END AREAS OF SAID INNER REGION BEING GREATER THAN THE RESISTANCE OF THE PORTIONS OF SAID OUTER RERION BETWEEN THE WAFER MAJOR SURFACES AND THE CORRESPONDING SURFACES OF SAID INNER REGION, AND SAID INNER REGION HAVING A PREDETERMINED SIZE AND POSITION WITH RESPECT TO SAID OUTER REGION TO PRODUCE PREDETERMINED ELECTRICAL CHARACTERISTICS OF RESISTANCE AND CAPACITANCE BETWEEN SAID CONTACTS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |