US2796368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making semi-conductor devices
Assignee: RCA Corp
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Filing: 1953-11-23
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Granted: 1957-06-18
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Expires: 1973-11-23
Abstract
No abstract record available.
Inventors
- 👤 Dietrich A Jenny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:58
CPC Classifications
C; C30; C30B; C30B31/00; C30B31/04; H; H10; H10P; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A METHOD OF MAKING A SEMI-CONDUCTOR DEVICE COMPRISING A BODY OF SEMI-CONDUCTIVE GERMANIUM HAVING AN ELECTRODE CONSISTING OF AN ALLOY OF LEAD FUSED TO A SURFACE THEREOF, AT LEAST TWO REGIONS OF RECIPROCALLY OPPOSITE CONDUCTIVITY TYPES WITHIN SAID BODY ADJACENT SAID ELECTRODE, AND A P-N RECTIFYING JUNCTION INTERMEDIATE SAID REGIONS, SAID METHOD COMPRISING THE STEPS OF IMMERSING A BODY OF AN ALLOY OF LEAD AND A CONDUCTIVITY TYPE-DETERMINING IMPURITY-YIELDING MATERIAL OF ONE CONDUCTIVITY TYPE IN AN AQUEOUS SOLUTION OF ACETIC ACID AND HYDROGEN PEROXIDE AND THEREAFTER ALLOYING SAID LEAD ALLOY BODY INTO A SURFACE OF A SEMI-CONDUCTIVE GERMANIUM BODY OF A CONDUCTIVITY TYPE OPPOSITE TO SAID ONE CONDUCTIVITY TYPETHEREBY TO FORM SAID DEVICE.
Claim 2
Independent Claim
113 words
A METHOD OF MAKING A SEMI-CONDUCTOR DEVICE COMPRISING A BODY OF SEMI-CONDUCTIVE GERMANIUM HAVING AN ELECTRODE CONSISTING OF AN ALLOY OF LEAD FUSED TO A SURFACE THEREOF, AT LEAST TWO REGIONS OF RECIPROCALLY OPPOSITE CONDUCTIVITY TYPES WITHIN SAID BODY ADJACENT SAID ELECTRODE, AND A P-N RECTIFYING JUNCTION INTERMEDIATE SAID REGIONS, SAID METHOD COMPRISING THE STEPS OF IMMERSING A BODY OF AN ALLOY OF LEAD AND A CONDUCTIVITY TYPE-DETERMINING IMPURITY-YIELDING MATERIAL OF ONE CONDUCTIVITY TYPE IN AN AQUEOUS SOLUTION OF ACETIC ACID AND HYDROGEN PEROXIDE AND THEREAFTER ALLOYING SAID LEAD ALLOY BODY INTO A SURFACE OF A SEMI-CONDUCTIVE GERMANIUM BODY OF A CONDUCTIVITY TYPE OPPOSITE TO SAID ONE CONDUCTIVITY TYPETHEREBY TO FORM SAID DEVICE.
References Cited (Backward Citations)
US2689785A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-17 | 1960-12-17 | 1961-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-17 | 1964-12-17 | 1965-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-17 | 1968-12-17 | 1969-06-18 | $7700.00 | Window Closed / Lapsed |