US3210563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Four-layer semiconductor switch with particular configuration exhibiting relatively high turn-off gain
Assignee: Westinghouse Electric Corp
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Filing: 1961-10-06
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Granted: 1965-10-05
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Expires: 1981-10-06
Abstract
No abstract record available.
Inventors
- 👤 Thorndike C T New
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:56
CPC Classifications
H; H10; H10D; H10D18/00; H10D18/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A SEMICONDUCTOR SWITCH COMPRISING A SEMICONDUCTOR MEMBER HAVING FOUR REGIONS OF ALTERNATE P-TYPE AND N-TYPE CONDUCTIVITY MATERIAL TO FORM A FIRST OUTER REGION, A FIRST INNER REGION, A SECOND INNER REGION AND A SECOND OUTER REGION JOINED SERIATIM, SAID FIRST OUTER REGION HAVING AN OPENING THEREIN, A FIRST ELECTRICAL CONTACT MEANS PROVIDING AN ELECTRICAL CONTACT WITH SAID FIRST INNER REGION SPACED FROM SAID FIRST OUTER REGION BUT WITHIN SAID OPENING, A SECOND ELECTRICAL CONTACT MEANS PROVIDING AN ELEC-
Claim 2
Dependent Claim
78 words
A SEMICONDUCTOR SWITCH COMPRISING A SEMICONDUCTOR MEMBER HAVING FOUR REGIONS OF ALTERNATE P-TYPE AND N-TYPE CONDUCTIVITY MATERIAL TO FORM A FIRST OUTER REGION, A FIRST INNER REGION, A SECOND INNER REGION AND A SECOND OUTER REGION JOINED SERIATIM, SAID FIRST OUTER REGION HAVING AN OPENING THEREIN, A FIRST ELECTRICAL CONTACT MEANS PROVIDING AN ELECTRICAL CONTACT WITH SAID FIRST INNER REGION SPACED FROM SAID FIRST OUTER REGION BUT WITHIN SAID OPENING, A SECOND ELECTRICAL CONTACT MEANS PROVIDING AN ELEC-
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) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |