US2847335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor devices and method of manufacturing them
Assignee: Siemens Schuckertwerke AG
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Filing: 1954-08-17
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Granted: 1958-08-12
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Expires: 1974-08-17
Abstract
No abstract record available.
Inventors
- 👤 Gremmelmaier Rolf
- 👤 Welker Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:16
CPC Classifications
H; H10; H10P; H10P95/00; H10P95/50
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
78 words
THE METHOD OF PRODUCING AN ELECTRIC SEMICONDUCTOR DEVICE, WHICH COMPRISES PLACING A CRYSTALLINE BODY OF A BINARY SEMOCONDUCTOR COMPOUND OF HOMOPOLAR CHARACTER IN CONTACT WITH AN ELECTRODE SUBSTANCE OF AN ELEMENT OF SAID BINARY COMPOUND BODY, HEATING THE ELECTRODE SUBSTGANCE ON SAID BODY ABOVE MELTING TEMPERATURE A SUFFICIENT TIME TO DISSOLVE A ZONE OF SAID COMPOUNT BODY IN SAID SUBSTANCE, AND PERMITTING THE SUBSTANCE AND THE BODY TO COOL WHEREBY THE DISSOLVED COMPOUND SEGREGATES BACK ONTO THE BODY.
References Cited (Backward Citations)
FR1057038A
Cited
US2798989A
Cited
US2703855A
Cited
US2742383A
Cited
US2735050A
Cited
US2705767A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |