Patent US3201664A successfully refreshed from Google Patents.
US3201664A
Expired / Lapsed
US
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Semiconductor diode having multiple regions of different conductivities
Assignee: International Standard Electric Corp
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Filing: 1962-03-05
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Granted: 1965-08-17
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Expires: 1982-03-05
Abstract
No abstract record available.
Inventors
- 👤 Adam Fritz Gunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:21
CPC Classifications
H; H10; H10D; H10D1/00; H10D1/60; H10D1/62; H10D1/64; H10W; H10W72/00; H10W72/071; H10W72/075; H10W72/07551; H10W72/07554; H10W72/50; H10W72/531; H10W72/5363; Y; Y10; Y10S; Y10S148/00; Y10S148/072
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A SEMICONDUCTOR DIODE COMPRISING A FIRST REGION OF ONE CONDUCTIVITY TYPE MATERIAL AND A SECOND REGION OF THE OPPOSITE CONDUCTIVITY TYPE MATERIAL, SAID SECOND REGION COMPRISING A FIRST, A SECOND AND A THIRD SUBREGION IN ORDER OF INCREASING DISTANCE FROM THE JUNCTION BETWEEN SAID FIRST AND SECOND REGIONS, SAID FIRST REGION AND EACH SUBREGION HAVING RELATIVELY CONSTANT PREDETERMINED IMPURITY CONCENTRATIONS THEREIN DIFFERENT FROM EACH ADJACENT SUBREGION, SAID SECOND SUBREGION BEING OF A LOWER CONDUCTIVITY AND IMPURITY CONCENTRATION THAN SAID FRIST AND THIRD SUBREGIONS, AND A PAIR OF ELECTRODES MAKING LOW RESISTANCE CONNECTION TO SAID FIRST REGION AND THIRD SUBREGION.
Claim 2
Dependent Claim
99 words
A SEMICONDUCTOR DIODE COMPRISING A FIRST REGION OF ONE CONDUCTIVITY TYPE MATERIAL AND A SECOND REGION OF THE OPPOSITE CONDUCTIVITY TYPE MATERIAL, SAID SECOND REGION COMPRISING A FIRST, A SECOND AND A THIRD SUBREGION IN ORDER OF INCREASING DISTANCE FROM THE JUNCTION BETWEEN SAID FIRST AND SECOND REGIONS, SAID FIRST REGION AND EACH SUBREGION HAVING RELATIVELY CONSTANT PREDETERMINED IMPURITY CONCENTRATIONS THEREIN DIFFERENT FROM EACH ADJACENT SUBREGION, SAID SECOND SUBREGION BEING OF A LOWER CONDUCTIVITY AND IMPURITY CONCENTRATION THAN SAID FRIST AND THIRD SUBREGIONS, AND A PAIR OF ELECTRODES MAKING LOW RESISTANCE CONNECTION TO SAID FIRST REGION AND THIRD SUBREGION.
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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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |