US3339128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated offset gate field effect transistor
Assignee: RCA Corp
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Filing: 1964-07-31
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Granted: 1967-08-29
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Expires: 1984-07-31
Abstract
No abstract record available.
Inventors
- 👤 John A Olmstead
- 👤 Joseph H Scott
- 👤 Kuznetzoff Philip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:55
CPC Classifications
H; H10; H10D; H10D30/00; H10D30/60; H10D30/611; H10D64/00; H10D64/20; H10D64/27; H10D64/311; H10D64/411; H10D64/511; H10D64/514; H10D64/516; H10D64/517; H10D64/518; H10D99/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A FIELD-EFFECT TRANSISTOR COMPRISING A SEMICONDUCTOR CHANNEL HAVING RESPECTIVE OPPOSITE ENDS, MEANS AT EACH OF SAID ENDS FOR ESTABLISHING OHMIC CONTACT TO SAID CHANNEL, AND A GATE ELECTRODE SPACED FROM SAID CHANNEL BY INSULATING MATERIAL, SAID INSULATING MATERIAL EXTENDING OVER THE ENTIRE AREA BETWEEN SAID ENDS OF SAID CHANNEL AND HAVING A THICKER PORTION OPPOSITE THE PORTION OF SAID CHANNEL ADJACENT ONE OF SAID ENDS AND A THINNER PORTION OPPOSITE THE PORTION OF THE CHANNEL ADJACENT THE OTHER OF SAID ENDS, SAID GATE ELECTRODE EXTENDING OVER SAID THINNER PORTION OF INSULATING MATERIAL.
Claim 2
Dependent Claim
92 words
A FIELD-EFFECT TRANSISTOR COMPRISING A SEMICONDUCTOR CHANNEL HAVING RESPECTIVE OPPOSITE ENDS, MEANS AT EACH OF SAID ENDS FOR ESTABLISHING OHMIC CONTACT TO SAID CHANNEL, AND A GATE ELECTRODE SPACED FROM SAID CHANNEL BY INSULATING MATERIAL, SAID INSULATING MATERIAL EXTENDING OVER THE ENTIRE AREA BETWEEN SAID ENDS OF SAID CHANNEL AND HAVING A THICKER PORTION OPPOSITE THE PORTION OF SAID CHANNEL ADJACENT ONE OF SAID ENDS AND A THINNER PORTION OPPOSITE THE PORTION OF THE CHANNEL ADJACENT THE OTHER OF SAID ENDS, SAID GATE ELECTRODE EXTENDING OVER SAID THINNER PORTION OF INSULATING MATERIAL.
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) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |