Patent US3720209A successfully refreshed from Google Patents.
Patent US3123750A successfully refreshed from Google Patents.
US3123750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple junction semiconductor device
Assignee: —
•
Filing: —
•
Granted: 1964-03-03
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Expires: 1981-03-03
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:38
CPC Classifications
H; H10; H10D; H10D88/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A SYMMETRICAL SWITCHING DEVICE COMPRISING A SEMICONDUCTOR BODY HAVING A PLURALITY OF ALTERNATING REGIONS OF OPPOSITE CONDUCTIVITY SEPARATED BY RECTIFYING BARRIER ZONES, SAID REGIONS BEING ARRANGED IN A COMPOSITE CONFIGURATION EQUIVALENT TO A PAIR OF OPPOSITELY POLED DIODES, RESPECTIVE TERMINAL CONDUCTORS CONNECTING ADJACENT OPPOSITELY CONDUCTIVE REGIONS OF THE BODY OF EFFECTIVELY CONNECT SAID DIODES IN PARALLEL, WHEREBY TO PROVIDE SYMMETRICAL SWITCHING ACTION FOR BOTH HALVES OF AN ALTERNATING CURRENT VOLTAGE WAVE APPLIED TO THE DEVICE, AND MEANS PROVIDING RELATIVELY HIGH INTERNAL RESISTIVITY IN THE BODY BETWEEN THE CONNECTIONS OF SAID TERMINAL CONDUCTORS THERETO, WHEREBY THE DEVICE IS RELATIVELY SENSITIVE TO THE RATE OF CHANGE OF THE VOLTAGE APPLIED THERETO.
Claim 2
Dependent Claim
109 words
A SYMMETRICAL SWITCHING DEVICE COMPRISING A SEMICONDUCTOR BODY HAVING A PLURALITY OF ALTERNATING REGIONS OF OPPOSITE CONDUCTIVITY SEPARATED BY RECTIFYING BARRIER ZONES, SAID REGIONS BEING ARRANGED IN A COMPOSITE CONFIGURATION EQUIVALENT TO A PAIR OF OPPOSITELY POLED DIODES, RESPECTIVE TERMINAL CONDUCTORS CONNECTING ADJACENT OPPOSITELY CONDUCTIVE REGIONS OF THE BODY OF EFFECTIVELY CONNECT SAID DIODES IN PARALLEL, WHEREBY TO PROVIDE SYMMETRICAL SWITCHING ACTION FOR BOTH HALVES OF AN ALTERNATING CURRENT VOLTAGE WAVE APPLIED TO THE DEVICE, AND MEANS PROVIDING RELATIVELY HIGH INTERNAL RESISTIVITY IN THE BODY BETWEEN THE CONNECTIONS OF SAID TERMINAL CONDUCTORS THERETO, WHEREBY THE DEVICE IS RELATIVELY SENSITIVE TO THE RATE OF CHANGE OF THE VOLTAGE APPLIED THERETO.
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) | 1967-03-03 | 1967-09-02 | 1968-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-03 | 1971-09-02 | 1972-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-03 | 1975-09-02 | 1976-03-03 | $7700.00 | Window Closed / Lapsed |