US2966434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semi-conductor devices
Assignee: British Thomson Houston Co Ltd
•
Filing: 1958-11-20
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Granted: 1960-12-27
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Expires: 1978-11-20
Abstract
No abstract record available.
Inventors
- 👤 Robert G Hibberd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:23
CPC Classifications
H; H10; H10P; H10P10/00; H10P10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
A MULTIPLE JUNCTION SEMI-CONDUCTOR DEVICE INCLUDING AT LEAST A LAYER OF SEMI-CONDUCTIVE GERMANIUM OF NEGATIVE CONDUCTIVITY TYPE FUSED TO A LAYER OF SEMI-CONDUCTIVE SILICON OF POSITIVE CONDUCTIVITY TYPE TO FORM A P-N JUNCTION AND AN INDIUM ELECTRODE FUSED TO THE GERMANIUM TO FORM A FURTHER P-N JUNCTION THEREWITH.
Claim 2
Dependent Claim
48 words
A MULTIPLE JUNCTION SEMI-CONDUCTOR DEVICE INCLUDING AT LEAST A LAYER OF SEMI-CONDUCTIVE GERMANIUM OF NEGATIVE CONDUCTIVITY TYPE FUSED TO A LAYER OF SEMI-CONDUCTIVE SILICON OF POSITIVE CONDUCTIVITY TYPE TO FORM A P-N JUNCTION AND AN INDIUM ELECTRODE FUSED TO THE GERMANIUM TO FORM A FURTHER P-N JUNCTION THEREWITH.
References Cited (Backward Citations)
US2569347A
Cited
US2821493A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-27 | 1964-06-27 | 1964-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-27 | 1968-06-27 | 1968-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-27 | 1972-06-27 | 1972-12-27 | $7700.00 | Window Closed / Lapsed |