US3211970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor devices
Assignee: RCA Corp
•
Filing: 1957-05-06
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Granted: 1965-10-12
•
Expires: 1977-05-06
Abstract
No abstract record available.
Inventors
- 👤 Schuyler M Christian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:04
CPC Classifications
H; H10; H10D; H10D10/00; H10D10/80; H10D10/821; H10D10/891; H10D62/00; H10D62/60; H10P; H10P10/00; H10P10/12; Y; Y10; Y10S; Y10S438/00; Y10S438/936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A SEMICONDUCTOR DEVICE COMPRISING A FIRST LAYER OF SEMICONDUCTIVE MATERIAL OF GIVEN CONDUCTIVITY TYPE AND ENERGY GAP, AN ADJACENT SECOND LAYER OF ANOTHER SEMICONDUCTIVE MATERIAL OF OPPOSITE CONDUCTIVITY TYPE AND DIFFERENT ENERGY GAP IN RECTIFYING CONTACT WITH SAID FIRST LAYER, A THIRD LAYER OF SEMICONDUCTIVE MATERIAL OF SAID GIVEN CONDUCTIVITY TYPE AND ENERGY GAP IN RECTIFYING CONTACT WITH SAID SECOND LAYER, THE ENERGY GAP OF SAID SECOND LAYER BEING GRADED FROM HIGH ADJACENT SAID FIRST LAYER TO LOW ADJACENT SAID THIRD LAYER, AND ELECTRODES CONNECTED TO EACH OF SAID LAYERS.
Claim 2
Dependent Claim
90 words
A SEMICONDUCTOR DEVICE COMPRISING A FIRST LAYER OF SEMICONDUCTIVE MATERIAL OF GIVEN CONDUCTIVITY TYPE AND ENERGY GAP, AN ADJACENT SECOND LAYER OF ANOTHER SEMICONDUCTIVE MATERIAL OF OPPOSITE CONDUCTIVITY TYPE AND DIFFERENT ENERGY GAP IN RECTIFYING CONTACT WITH SAID FIRST LAYER, A THIRD LAYER OF SEMICONDUCTIVE MATERIAL OF SAID GIVEN CONDUCTIVITY TYPE AND ENERGY GAP IN RECTIFYING CONTACT WITH SAID SECOND LAYER, THE ENERGY GAP OF SAID SECOND LAYER BEING GRADED FROM HIGH ADJACENT SAID FIRST LAYER TO LOW ADJACENT SAID THIRD LAYER, AND ELECTRODES CONNECTED TO EACH OF SAID LAYERS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-11 | 1969-04-12 | 1969-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-11 | 1973-04-12 | 1973-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-11 | 1977-04-12 | 1977-10-12 | $7700.00 | Window Closed / Lapsed |