US2850413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making fused junction semiconductor devices
Assignee: Motorola Solutions Inc
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Filing: 1954-09-29
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Granted: 1958-09-02
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Expires: 1974-09-29
Abstract
No abstract record available.
Inventors
- 👤 Matt F Schmich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:33
CPC Classifications
C; C30; C30B; C30B31/00; C30B31/04; H; H10; H10P; H10P95/00; Y; Y10; Y10S; Y10S438/00; Y10S438/965; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12528
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
THE METHOD OF FORMING A PLANAR JUNCTION BETWEEN AN ELECTRODE AND A SEMICONDUCTOR WAFER HAVING A FACE IN A PLANE PARALLEL WITH A MILLER (111) CRYSTALLOGRAPHIC PLANE, WHICH COMPRISES HOLDING ONE FACE OF A DISC OF IMPURITY METAL AGAINST SAID FACE OF THE WAFER WITH A PLANE SURFACE OF A MOLD IN ENGAGEMENT WITH THE OPPOSITE FACE OF THE DISC, HEATING THE DISC AND THE WAFER TO MELT THE DISC WHILE SO HELD, AND COOLING THE DISC AND THE WAFER TO SOLIDIFY THE DISC WHILE SO HOLDING THE DISC.
Claim 2
Independent Claim
89 words
THE METHOD OF FORMING A PLANAR JUNCTION BETWEEN AN ELECTRODE AND A SEMICONDUCTOR WAFER HAVING A FACE IN A PLANE PARALLEL WITH A MILLER (111) CRYSTALLOGRAPHIC PLANE, WHICH COMPRISES HOLDING ONE FACE OF A DISC OF IMPURITY METAL AGAINST SAID FACE OF THE WAFER WITH A PLANE SURFACE OF A MOLD IN ENGAGEMENT WITH THE OPPOSITE FACE OF THE DISC, HEATING THE DISC AND THE WAFER TO MELT THE DISC WHILE SO HELD, AND COOLING THE DISC AND THE WAFER TO SOLIDIFY THE DISC WHILE SO HOLDING THE DISC.
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) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |