US3395290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective circuit for insulated gate metal oxide semiconductor fieldeffect device
Assignee: General Micro Electronics Inc
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Filing: 1965-10-08
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Granted: 1968-07-30
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Expires: 1985-10-08
Abstract
No abstract record available.
Inventors
- 👤 Donald E Farina
- 👤 Daniel R Borror
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:25
CPC Classifications
H; H10; H10D; H10D89/00; H10D89/60; H10D89/601; H03; H03F; H03F1/00; H03F1/52; H03F1/523; H03K; H03K17/00; H03K17/08; H03K17/081; H03K17/0812; H03K17/08122; H10D89/811; Y; Y10; Y10S; Y10S148/00; Y10S148/122; Y10S148/163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
IN COMBINATION: A FIRST SEMICONDUCTOR FIELD-EFFECT DEVICE HAVING A GATE ELECTRODE, AN ADJACENT GATE INSULATOR, AND TWO FURTHER ELECTRODES COMPRISING A SOURCES ELECTRODE AND A DRAIN ELECTRODE, A SECOND SEMICONDUCTOR FIELD-EFFECT DEVICE SIMILAR TO SAID FIRST DEVICE, THE SOURCE-TO-DRAIN CIRCUIT OF SAID SECOND DEVICE BEING CONNECTED IN SERIES WITH SAID GATE ELECTRODE OF SAID FIRST DEVICE, MEANS FOR IMPRESSING AN INPUT SIGNAL ON ONE OF THE FURTHER ELECTRODES OF SAID SECOND DEVICE FOR TRANSMISSION TO SAID GATE ELECTRODE OF SAID FIRST DEVICE, AND MEANS CONNECTED TO SAID SECOND DEVICE FOR RENDERING SAID SECOND DEVICE NONCONDUCTIVE SO AS TO REDUCE THE MAGNITUDE OF SAID INPUT SIGNAL WHEN SAID INPUT SIGNAL EXCEEDS A PREDETERMINED VALUE SO AS TO PROTECT SAID FIRST DEVICE AGAINST BREAKDOWN OF ITS GATE INSULATOR.
Claim 2
Dependent Claim
126 words
IN COMBINATION: A FIRST SEMICONDUCTOR FIELD-EFFECT DEVICE HAVING A GATE ELECTRODE, AN ADJACENT GATE INSULATOR, AND TWO FURTHER ELECTRODES COMPRISING A SOURCES ELECTRODE AND A DRAIN ELECTRODE, A SECOND SEMICONDUCTOR FIELD-EFFECT DEVICE SIMILAR TO SAID FIRST DEVICE, THE SOURCE-TO-DRAIN CIRCUIT OF SAID SECOND DEVICE BEING CONNECTED IN SERIES WITH SAID GATE ELECTRODE OF SAID FIRST DEVICE, MEANS FOR IMPRESSING AN INPUT SIGNAL ON ONE OF THE FURTHER ELECTRODES OF SAID SECOND DEVICE FOR TRANSMISSION TO SAID GATE ELECTRODE OF SAID FIRST DEVICE, AND MEANS CONNECTED TO SAID SECOND DEVICE FOR RENDERING SAID SECOND DEVICE NONCONDUCTIVE SO AS TO REDUCE THE MAGNITUDE OF SAID INPUT SIGNAL WHEN SAID INPUT SIGNAL EXCEEDS A PREDETERMINED VALUE SO AS TO PROTECT SAID FIRST DEVICE AGAINST BREAKDOWN OF ITS GATE INSULATOR.
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) | 1971-07-30 | 1972-01-29 | 1972-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-30 | 1976-01-29 | 1976-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-30 | 1980-01-29 | 1980-07-30 | $7700.00 | Window Closed / Lapsed |