US3131096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconducting devices and methods of preparation thereof
Assignee: RCA Corp
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Filing: 1959-01-27
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Granted: 1964-04-28
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Expires: 1979-01-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Henry S Sommers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:20
CPC Classifications
H; H10; H10D; H10D62/00; H10D62/60; H10D62/10; H10D8/00; H10D8/70; H10D99/00; H10P; H10P95/00; H10P95/50
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
86 words
A DEVICE COMPRISING A SINGLE CRYSTAL BODY OF SEMICONDUCTING INDIUM ANTIMONIDE HAVING A FREE CHARGE CARRIER CONCENTRATION BETWEEN 0.03 AND 0.15X10**19 CM.-3, AN ABRUPT P-N JUNCTION ON A SURFACE THEREOF, AND NON-RECTIFYING CONNECTIONS ATTACHED TO EACH SIDE OF SAID JUNCTION, THE RATIO OF THE EFFECTIVE MASS OF THE LIGHTER FREE CHARGE CARRIER IN SAID INDIUM ANTIMONIDE TO THE MASS OF A FREE ELECTRON BEING LESS THAN 0.15; SAID DEVICE BEING CHARACTERIZED BY EXHIBITING A NEGATIVE RESISTANCE CHARACTERISTIC WHEN BIASED AT LOW VOLTAGES IN THE FORWARD DIRECTION.
References Cited (Backward Citations)
US2847335A
Cited
US2936256A
Cited
US2843515A
Cited
US2870052A
Cited
US2878152A
Cited
US2940878A
Cited
US2929753A
Cited
US2938819A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |