US2871377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bistable semiconductor devices
Assignee: General Electric Co
•
Filing: 1954-07-29
•
Granted: 1959-01-27
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Expires: 1974-07-29
Abstract
No abstract record available.
Inventors
- 👤 Winfield W Tyler
- 👤 Newman Roger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:34
CPC Classifications
H; H10; H10W; H10W40/00; H10W40/30; H10D; H10D99/00; H10P; H10P95/00; H10W72/00; H10W99/00; Y; Y10; Y10S; Y10S438/00; Y10S438/914; Y10S438/918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A BISTABLE ASYMMETRICALLY CONDUCTIVE DEVICE COMPRISING A HOMOGENEOUS MONO-CRYSTGALLINE SEMICONDUCTOR BODY HAVING TWO POSSIBLE STABLE FORWARD RESISTIVITY VALUES AND CONSISTING ESSENTIALLY OF NEAR INTRINSIC SEMICONDUCTIVE MATERIAL HAVING A ROOM TEMPERATURE RESISTIVITY OF AT LEAST 40 OHM-CENTIMETERS AND HAVING DEEP LYING ENERGY LEVELS INDUCED THEREIN BY IMPURITY IMPREGNATION WITH A METALLIC ELEMENT OTHER THAN THE METALS OF GROUPS III AND V OF THE PERIODIC TABLE, A P-N JUNCTION RECTIFYING CONTACT AT ONE SURFACE PORTION OF SAID BODY, A NON-RECTIFYING CONTACT TO A
Claim 2
Dependent Claim
81 words
A BISTABLE ASYMMETRICALLY CONDUCTIVE DEVICE COMPRISING A HOMOGENEOUS MONO-CRYSTGALLINE SEMICONDUCTOR BODY HAVING TWO POSSIBLE STABLE FORWARD RESISTIVITY VALUES AND CONSISTING ESSENTIALLY OF NEAR INTRINSIC SEMICONDUCTIVE MATERIAL HAVING A ROOM TEMPERATURE RESISTIVITY OF AT LEAST 40 OHM-CENTIMETERS AND HAVING DEEP LYING ENERGY LEVELS INDUCED THEREIN BY IMPURITY IMPREGNATION WITH A METALLIC ELEMENT OTHER THAN THE METALS OF GROUPS III AND V OF THE PERIODIC TABLE, A P-N JUNCTION RECTIFYING CONTACT AT ONE SURFACE PORTION OF SAID BODY, A NON-RECTIFYING CONTACT TO A
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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) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |