US3099588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Formation of semiconductor transition regions by alloy vaporization and deposition
Assignee: Westinghouse Electric Corp
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Filing: 1959-03-11
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Granted: 1963-07-30
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Expires: 1979-03-11
Abstract
No abstract record available.
Inventors
- 👤 Thorndike C T New
- 👤 Pappas James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:33
CPC Classifications
C; C23; C23C; C23C14/00; C23C14/22; C23C14/54; C23C14/541; C23C14/06; C23C14/14; H; H10; H10P; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A PROCESS FOR FORMING A SEMICONDUCTOR DEVICE WHICH COMPRISES VAPOR DEPOSITING A READILY SOLDERABLE HOMOGENOUS DOPING ALLOY COMPRISED OF ALUMINUM AND INDIUM FROM A SINGLE HOMOGENOUS MELT, UPON A BODY OF AN NTYPE SEMICONDUCTOR MATERIAL AT A TEMPERATURE BELOW OF N-TYPE SEMICONDUCTOR MATERIAL AT A TEMPERATURE BELOW ITS METLING POINT, BELOW MELTING POINT OF THE ALUMINUM COMPONENT OF THE DOPING ALLOY AND ABOVE THE METLING POINT OF THE INDIUM, THE ALUMINUM AND INDIUM COMPRISING THE DOPING ALLOY BEING DEPOSITED SIMULTANEOUSLY UPON THE BODY WHEREBY, AN ALUMINUM RICH REGION IS FORMED WITHIN THE BODY OF SEMICONDUCTOR MATERIAL, SAID ALUMINUM RICH REGION CONVERTING A PORTION OF THE BODY TO A P-TYPE
Claim 2
Dependent Claim
109 words
A PROCESS FOR FORMING A SEMICONDUCTOR DEVICE WHICH COMPRISES VAPOR DEPOSITING A READILY SOLDERABLE HOMOGENOUS DOPING ALLOY COMPRISED OF ALUMINUM AND INDIUM FROM A SINGLE HOMOGENOUS MELT, UPON A BODY OF AN NTYPE SEMICONDUCTOR MATERIAL AT A TEMPERATURE BELOW OF N-TYPE SEMICONDUCTOR MATERIAL AT A TEMPERATURE BELOW ITS METLING POINT, BELOW MELTING POINT OF THE ALUMINUM COMPONENT OF THE DOPING ALLOY AND ABOVE THE METLING POINT OF THE INDIUM, THE ALUMINUM AND INDIUM COMPRISING THE DOPING ALLOY BEING DEPOSITED SIMULTANEOUSLY UPON THE BODY WHEREBY, AN ALUMINUM RICH REGION IS FORMED WITHIN THE BODY OF SEMICONDUCTOR MATERIAL, SAID ALUMINUM RICH REGION CONVERTING A PORTION OF THE BODY TO A P-TYPE
References Cited (Backward Citations)
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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) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |