US3258371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicon semiconductor device for high frequency, and method of its manufacture
Assignee: Semiconductor Research Foundation
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Filing: 1963-01-29
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Granted: 1966-06-28
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Expires: 1983-01-29
Abstract
No abstract record available.
Inventors
- 👤 Sukegawa Tokuzo
- 👤 Nishizawa Jun-Ichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:07
CPC Classifications
H; H10; H10P; H10P95/00; H10P95/50; H10D; H10D99/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
AN ELECTRONIC SEMICONDUCTOR DEVICE FOR HIGH FREQUENCY COMPRISING A CRYSTALLINE BODY OF SILICON HAVING TWO MUTUALLY ADJACENT REGIONS OF P-TYPE AND N-TYPE CONDUCTANCE FORMIG A P-N JUNCTION IN SAID BODY, SAID N-TYPE REGION HAVING JOINED THEREWITH AN ELECTRODE FORMED FROM METAL OF THE GROUP CONSISTING OF TIN, GOLD AND MIXTURES THEREOF WITH DONOR IMPURITY FROM THE GROUP CONSISTING OF AT LEAST ONE ANTIMONY, PHOSPHORUS AND ARSENIC THEREIN AND WITH ALUMINUM THEREIN, THE ALUMINUM BEING IN
Claim 2
Dependent Claim
75 words
AN ELECTRONIC SEMICONDUCTOR DEVICE FOR HIGH FREQUENCY COMPRISING A CRYSTALLINE BODY OF SILICON HAVING TWO MUTUALLY ADJACENT REGIONS OF P-TYPE AND N-TYPE CONDUCTANCE FORMIG A P-N JUNCTION IN SAID BODY, SAID N-TYPE REGION HAVING JOINED THEREWITH AN ELECTRODE FORMED FROM METAL OF THE GROUP CONSISTING OF TIN, GOLD AND MIXTURES THEREOF WITH DONOR IMPURITY FROM THE GROUP CONSISTING OF AT LEAST ONE ANTIMONY, PHOSPHORUS AND ARSENIC THEREIN AND WITH ALUMINUM THEREIN, THE ALUMINUM BEING IN
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |