US3381187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-frequency field-effect triode device
Assignee: Raytheon Co
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Filing: 1964-08-18
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Granted: 1968-04-30
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Expires: 1984-08-18
Abstract
No abstract record available.
Inventors
- 👤 Zuleeg Rainer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:46
CPC Classifications
H; H10; H10D; H10D48/00; H10D48/30; H10D48/32; H10D48/36; H10D10/00; H10D30/00; H10D30/80; H10D99/00; Y; Y10; Y10S; Y10S148/00; Y10S148/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A FIELD-EFFECT TRIODE DEVICE COMPRISING: (A) A BODY OF SEMI-INSULATOR MATERIAL OF A FIRST CONDUCTIVITY-TYPE; (B) A CONTROL ELECTRODE MEMBER IN THE FORM OF A GRID OF SEMI-INSULATOR MATERIAL OF A SECOND TYPE OF CONDUCTIVITY OPPOSITE TO SAID FIRST TYPE DISPOSED WITHIN AND SURROUNDED ON ALL SURFACES BY SAID BODY OF SEMIINSULATOR MATERIAL; (C) ELECTRICALLY CONDUCTIVE ELECTRODE MEMBERS DISPOSED ON OPPOSITE SURFACES OF SAID BODY OF SEMI-INSULATOR MATERIAL AND IN ELECTRICAL CONTACT THEREWITH; (D) A FIRST REGION OF SEMI-INSULATOR MATERIAL OF SAID SECOND TYPE OF CONDUCTIVITY EXTENDING INTO SAID BODY AND SURROUNDING SAID CONTROL ELECTRODE MEMBER WHILE BEING ELECTRICALLY ISOLATED THEREFROM BY PORTIONS OF SAID BODY; (E) AND A SECOND REGION OF SEMI-INSULATOR MATERIAL OF SAID SECOND TYPE OF CONDUCTIVITY EXTENDING INTO SAID BODY FROM A SURFACE THEREOF AND MAKING ELECTRICAL CONTACT TO SAID CONTROL ELECTRODE MEMBER WHILE BEING ELECTRICALLY ISOLATED FROM SAID FIRST REGION BY PORTIONS OF SAID BODY.
Claim 2
Dependent Claim
150 words
A FIELD-EFFECT TRIODE DEVICE COMPRISING: (A) A BODY OF SEMI-INSULATOR MATERIAL OF A FIRST CONDUCTIVITY-TYPE; (B) A CONTROL ELECTRODE MEMBER IN THE FORM OF A GRID OF SEMI-INSULATOR MATERIAL OF A SECOND TYPE OF CONDUCTIVITY OPPOSITE TO SAID FIRST TYPE DISPOSED WITHIN AND SURROUNDED ON ALL SURFACES BY SAID BODY OF SEMIINSULATOR MATERIAL; (C) ELECTRICALLY CONDUCTIVE ELECTRODE MEMBERS DISPOSED ON OPPOSITE SURFACES OF SAID BODY OF SEMI-INSULATOR MATERIAL AND IN ELECTRICAL CONTACT THEREWITH; (D) A FIRST REGION OF SEMI-INSULATOR MATERIAL OF SAID SECOND TYPE OF CONDUCTIVITY EXTENDING INTO SAID BODY AND SURROUNDING SAID CONTROL ELECTRODE MEMBER WHILE BEING ELECTRICALLY ISOLATED THEREFROM BY PORTIONS OF SAID BODY; (E) AND A SECOND REGION OF SEMI-INSULATOR MATERIAL OF SAID SECOND TYPE OF CONDUCTIVITY EXTENDING INTO SAID BODY FROM A SURFACE THEREOF AND MAKING ELECTRICAL CONTACT TO SAID CONTROL ELECTRODE MEMBER WHILE BEING ELECTRICALLY ISOLATED FROM SAID FIRST REGION BY PORTIONS OF SAID BODY.
References Cited (Backward Citations)
US2790037A
Cited
US2968750A
Cited
US2899344A
Cited
US2989713A
Cited
US3035186A
Cited
US3025438A
Cited
US3258663A
Cited
US3274461A
Cited
FR1324048A
Cited
US3176192A
Cited
US3252003A
Cited
US3260902A
Cited
US3268374A
Cited
US3275911A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |