Patent US2962394A successfully refreshed from Google Patents.
US2962394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for plating a silicon base semiconductive unit with nickel
Assignee: Motorola Solutions Inc
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Filing: 1957-06-20
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Granted: 1960-11-29
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Expires: 1977-06-20
Abstract
No abstract record available.
Inventors
- 👤 Raymond J Andres
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:54
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/40; H10P14/46; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A PROCESS FOR TREATING A SILICON BASE SEMICONDUCTOR BODY HAVING A PN JUNCTION THEREIN AND HAVING A GLASSY BOROSILICATE LAYER COVERING ONE PORTION OF ITS SURFACE AND A GLASSY PHOSPHOSILICATE LAYER COVERING ANOTHER PORTION OF ITS SURFACE TO DEPOSIT METALLIC NICKEL ON THE SEMICONDUCTOR BODY, SAID PROCESS COMPRISING CONTACTING THE ENTIRE SURFACE OF SAID SEMICONDUCTOR BODY WITH AN AQUEOUS SOLUTION OF AN ETCHING AGENT SELECTED FROM THE GROUP CONSISTING OF HYDROFLUORIC ACID AND A COMBINATION OF HYDROGEN PEROXIDE WITH AN ALKALI METAL HYDROXIDE AND SUBSEQUENTLY CONTACTING THE ENTIRE SURFACE OF SAID SEMICONDUCTOR BODY WITH AN AQUEOUS SOLUTION OF NICKEL CHLORIDE AND SODIUM HYPOPHOSPHITE.
Claim 2
Dependent Claim
103 words
A PROCESS FOR TREATING A SILICON BASE SEMICONDUCTOR BODY HAVING A PN JUNCTION THEREIN AND HAVING A GLASSY BOROSILICATE LAYER COVERING ONE PORTION OF ITS SURFACE AND A GLASSY PHOSPHOSILICATE LAYER COVERING ANOTHER PORTION OF ITS SURFACE TO DEPOSIT METALLIC NICKEL ON THE SEMICONDUCTOR BODY, SAID PROCESS COMPRISING CONTACTING THE ENTIRE SURFACE OF SAID SEMICONDUCTOR BODY WITH AN AQUEOUS SOLUTION OF AN ETCHING AGENT SELECTED FROM THE GROUP CONSISTING OF HYDROFLUORIC ACID AND A COMBINATION OF HYDROGEN PEROXIDE WITH AN ALKALI METAL HYDROXIDE AND SUBSEQUENTLY CONTACTING THE ENTIRE SURFACE OF SAID SEMICONDUCTOR BODY WITH AN AQUEOUS SOLUTION OF NICKEL CHLORIDE AND SODIUM HYPOPHOSPHITE.
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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) | 1963-11-29 | 1964-05-30 | 1964-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-29 | 1968-05-30 | 1968-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-29 | 1972-05-30 | 1972-11-29 | $7700.00 | Window Closed / Lapsed |