Patent US2694040A successfully refreshed from Google Patents.
US2694040A
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Methods of selectively plating p-type material of a semiconductor containing a p-n junction
Assignee: AT&T Inc
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Filing: 1951-12-28
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Granted: 1954-11-09
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Expires: 1971-12-28
Abstract
No abstract record available.
Inventors
- 👤 Gustoff W Davis
- 👤 Maynard C Waltz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:57
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/40; H10P14/46; H10P14/47; Y; Y10; Y10S; Y10S204/00; Y10S204/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THE METHOD OF DEFINING A P-N JUNCTION IN A SEMICONDUCTIVE BODY BY SELECTIVELY PLATING METAL ON THE P-TYPE MATERIAL WHICH COMPRISES IMMERSING THE PORTION OF THE BODY CONTAINING THE JUNCTION IN AN ELECTROPLATING BATH, CONNECTING THE POSITIVE TERMINAL OF A SOURCE OF CURRENT TO THE N-TYPE SECTION OF THE BODY, CONNECTING THE NEGATIVE TERMINAL OF THE SOURCE OF CURRENT TO THE P-TYPE SECTION OF THE BODY TO ESTABLISH A POTENTIAL DIFFERENCE ACROSS THE P-N JUNCTION WHICH IS AT LEAST AS GREAT AS THE POLAROGRAPHIC POTENTIAL OF THE METAL IN THE PLATING BATH, THEREBY PASSING
Claim 2
Independent Claim
94 words
THE METHOD OF DEFINING A P-N JUNCTION IN A SEMICONDUCTIVE BODY BY SELECTIVELY PLATING METAL ON THE P-TYPE MATERIAL WHICH COMPRISES IMMERSING THE PORTION OF THE BODY CONTAINING THE JUNCTION IN AN ELECTROPLATING BATH, CONNECTING THE POSITIVE TERMINAL OF A SOURCE OF CURRENT TO THE N-TYPE SECTION OF THE BODY, CONNECTING THE NEGATIVE TERMINAL OF THE SOURCE OF CURRENT TO THE P-TYPE SECTION OF THE BODY TO ESTABLISH A POTENTIAL DIFFERENCE ACROSS THE P-N JUNCTION WHICH IS AT LEAST AS GREAT AS THE POLAROGRAPHIC POTENTIAL OF THE METAL IN THE PLATING BATH, THEREBY PASSING
References Cited (Backward Citations)
US1847653A
Cited
US2443543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-08 | 1958-05-10 | 1958-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-08 | 1962-05-10 | 1962-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-08 | 1966-05-10 | 1966-11-09 | $7700.00 | Window Closed / Lapsed |