US2847336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing semiconductor devices
Assignee: RCA Corp
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Filing: 1956-01-30
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Granted: 1958-08-12
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Expires: 1976-01-30
Abstract
No abstract record available.
Inventors
- 👤 Jacques I Pankove
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:00
CPC Classifications
C; C30; C30B; C30B31/00; C30B31/04; H; H10; H10P; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN THE METHOD OF MAKING A P-N JUNCTION SEMICONDUCTOR DEVICE INCLUDING ALLOYING A QUANTITY OF CONDUCTIVITY DETERMINING INPURITY MATERIAL HAVING LOW EDGE DISLOCATION DENSITY TO A BODY OF CRYSTALLINE SEMICONDUCTOR MATERIAL, SAID IMPURITY MATERIAL HAVING A LOWER MELTING POINT THAN SAID SEMICONDUCTOR BODY, THE STEP OF DISTURBING THE CRYSTAL STRUCTURE OF THE SEMICONDUCTOR BODY AT THE DESIRED ELECTRODE SITE AND THEN ALLOYING SAID QUANTITY OF IMPURITY MATERIAL INTO THE SEMICONDUCTOR BODY BY HEATING TO A TEMPERATURE ABOVE THE MELTING POINT OF SAID IMPURITY BUT BELOW THE MELTING POINT OF SAID SEMICONDUCTOR BODY.
Claim 2
Dependent Claim
92 words
IN THE METHOD OF MAKING A P-N JUNCTION SEMICONDUCTOR DEVICE INCLUDING ALLOYING A QUANTITY OF CONDUCTIVITY DETERMINING INPURITY MATERIAL HAVING LOW EDGE DISLOCATION DENSITY TO A BODY OF CRYSTALLINE SEMICONDUCTOR MATERIAL, SAID IMPURITY MATERIAL HAVING A LOWER MELTING POINT THAN SAID SEMICONDUCTOR BODY, THE STEP OF DISTURBING THE CRYSTAL STRUCTURE OF THE SEMICONDUCTOR BODY AT THE DESIRED ELECTRODE SITE AND THEN ALLOYING SAID QUANTITY OF IMPURITY MATERIAL INTO THE SEMICONDUCTOR BODY BY HEATING TO A TEMPERATURE ABOVE THE MELTING POINT OF SAID IMPURITY BUT BELOW THE MELTING POINT OF SAID SEMICONDUCTOR BODY.
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) | 1961-08-11 | 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 |