US2827436A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of improving the minority carrier lifetime in a single crystal silicon body
Assignee: AT&T Inc
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Filing: 1956-01-16
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Granted: 1958-03-18
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Expires: 1976-01-16
Abstract
No abstract record available.
Inventors
- 👤 Bemski George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:03
CPC Classifications
H; H10; H10P; H10P36/00; H10P36/03; H10P14/00; H10P14/40; H10P14/46; H10P95/00; Y; Y10; Y10S; Y10S148/00; Y10S148/062
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
THE METHOD OF IMPROVING THE MINORITY CARRIER LIFETIME IN A SINGLE CRYSTAL SILICON BODY WHICH COMPRISES HEATING SAID BODY TO A TEMPERATURE IN EXCESS OF 750*C. IN CONTACT WITH NICKEL FOR AN INTERVAL WHICH IS INVERSELY RELATED TO THE TEMPERATURE AND EXCEEDS ABOUT THREE HOURS AT 780* C. AND ABOUT A MINUTE AT 1100*C.
Claim 2
Independent Claim
54 words
THE METHOD OF IMPROVING THE MINORITY CARRIER LIFETIME IN A SINGLE CRYSTAL SILICON BODY WHICH COMPRISES HEATING SAID BODY TO A TEMPERATURE IN EXCESS OF 750*C. IN CONTACT WITH NICKEL FOR AN INTERVAL WHICH IS INVERSELY RELATED TO THE TEMPERATURE AND EXCEEDS ABOUT THREE HOURS AT 780* C. AND ABOUT A MINUTE AT 1100*C.
References Cited (Backward Citations)
US2743200A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-17 | 1961-09-16 | 1962-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-17 | 1965-09-16 | 1966-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-17 | 1969-09-16 | 1970-03-18 | $7700.00 | Window Closed / Lapsed |