US3555373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor device
Assignee: Sony Corp
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Filing: 1968-03-05
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Granted: 1971-01-12
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Expires: 1988-03-05
Abstract
Abstract A SEMICONDUCTOR DEVICE INCLUDING A WAFER OF SEMICONDUCTOR MATERIAL HAVING CHARGE CARRIERS OF ONE POLARITY AND A CENTRAL REGION HAVING CHARGE CARRIERS OF THE OTHER POLARITY. A RING OF SEMICONDUCTOR MATERIAL IS DISPOSED AROUND THE CENTRAL REGION AND SPACED THEREFROM BY A DISTANCE THAT PERMITS THE DEPLETION REGIONS OF THE CENTRAL LAYER AND THE RING TO MERGE WITHOUT THE APPLICATION OF THE VOLTAGE TO THE DEVICE.
Inventors
- 👤 Yoshiyuki Kawana
- 👤 Saburo Iwata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:36
CPC Classifications
H; H10; H10D; H10D62/00; H10D62/10; H10D62/102; H10D62/103; H10D62/105; H10D62/106; H10D99/00; H10P; H10P95/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |