US3283221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Field effect transistor
Assignee: RCA Corp
•
Filing: 1962-10-15
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Granted: 1966-11-01
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Expires: 1982-10-15
Abstract
No abstract record available.
Inventors
- 👤 Frederic P Heiman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:00
CPC Classifications
H; H10; H10D; H10D30/00; H10D30/60; H10D30/637; H10D99/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A SEMICONDUCTOR DEVICE COMPRISING A FIRST CHANNEL OF LOW RESISTIVITY SEMICONDUCTOR MATERIAL OF ONE CONDUCTIVITY TYPE, A SECOND CHANNEL OF LOW RESISTIVITY SEMICONDUCTOR MATERIAL OF THE OPPOSITE CONDUCTIVITY TYPE UPON SAID FIRST CANNEL, A LAYER OF INSULATOR MATERIAL UPON SAID SECOND CHANNEL, A GATE ELECTRODE UPON SAID LAYER OF INSULATOR MATERIAL, A COMMON SOURCE PROVIDING LOW RESISTIVITY CONTACT TO BOTH OF SAID CHANNELS, AND A COMMON DRAIN PROVIDING LOW RESISTIVITY CONTACT TO BOTH OF SAID CHANNELS.
Claim 2
Dependent Claim
76 words
A SEMICONDUCTOR DEVICE COMPRISING A FIRST CHANNEL OF LOW RESISTIVITY SEMICONDUCTOR MATERIAL OF ONE CONDUCTIVITY TYPE, A SECOND CHANNEL OF LOW RESISTIVITY SEMICONDUCTOR MATERIAL OF THE OPPOSITE CONDUCTIVITY TYPE UPON SAID FIRST CANNEL, A LAYER OF INSULATOR MATERIAL UPON SAID SECOND CHANNEL, A GATE ELECTRODE UPON SAID LAYER OF INSULATOR MATERIAL, A COMMON SOURCE PROVIDING LOW RESISTIVITY CONTACT TO BOTH OF SAID CHANNELS, AND A COMMON DRAIN PROVIDING LOW RESISTIVITY CONTACT TO BOTH OF SAID CHANNELS.
References Cited (Backward Citations)
US1900018A
Cited
FR1037293A
Cited
US2756285A
Cited
US2900531A
Cited
US2979427A
Cited
US2940022A
Cited
US3191061A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |