US3393091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing semiconductor assemblies
Assignee: Robert Bosch GmbH
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Filing: 1965-08-19
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Granted: 1968-07-16
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Expires: 1985-08-19
Abstract
No abstract record available.
Inventors
- 👤 Hartmann Horst Joachim
- 👤 Widmann Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:01
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/40; H10P14/46; H10P95/00; Y; Y10; Y10S; Y10S438/00; Y10S438/974
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A METHOD OF PRODUCING A SEMICONDUCTOR ASSEMBLY, COMPRISING THE STEPS OF FORMING AT THE SURFACE OF A MONOCRYSTALLINE SEMICONDUCTOR A EUTECTIC LAYER CONSISTING ESSENTIALLY OF SAID SEMICONDUCTOR AND OF A METAL ADAPTED TO FORM A EUTECTIC THEREWITH; TREATING THE THUS FORMED EUTECTIC SURFACE LAYER OF SAID MONOCRYSTALLINE SEMICONDUCTOR WITH A SOLUTION INCLUDING NICKEL AND FLUORINE IONS SO AS TO ACTIVATE SAID EUTECTIC SURFACE THEREBY FACILITATING FIRM ADHERENCE OF A NICKEL ELECTRODE LAYER THERETO; AND FORMING ON THE THUS ACTIVATED SURFACE BY REDUCTION OF A NICKEL SALT WITH SODIUM HYPOPHOSPHITE A NICKEL ELECTRODE LAYER FIRMLY ADHERING TO SAID SURFACE.
Claim 2
Independent Claim
98 words
A METHOD OF PRODUCING A SEMICONDUCTOR ASSEMBLY, COMPRISING THE STEPS OF FORMING AT THE SURFACE OF A MONOCRYSTALLINE SEMICONDUCTOR A EUTECTIC LAYER CONSISTING ESSENTIALLY OF SAID SEMICONDUCTOR AND OF A METAL ADAPTED TO FORM A EUTECTIC THEREWITH; TREATING THE THUS FORMED EUTECTIC SURFACE LAYER OF SAID MONOCRYSTALLINE SEMICONDUCTOR WITH A SOLUTION INCLUDING NICKEL AND FLUORINE IONS SO AS TO ACTIVATE SAID EUTECTIC SURFACE THEREBY FACILITATING FIRM ADHERENCE OF A NICKEL ELECTRODE LAYER THERETO; AND FORMING ON THE THUS ACTIVATED SURFACE BY REDUCTION OF A NICKEL SALT WITH SODIUM HYPOPHOSPHITE A NICKEL ELECTRODE LAYER FIRMLY ADHERING TO SAID SURFACE.
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) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |