Patent US2862840A successfully refreshed from Google Patents.
US2862840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor devices
Assignee: General Electric Co
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Filing: 1956-09-26
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Granted: 1958-12-02
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Expires: 1976-09-26
Abstract
No abstract record available.
Inventors
- 👤 Andrew P Kordalewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:52
CPC Classifications
H; H10; H10D; H10D62/00; H10D62/80; H10D62/83; H10D62/834; C; C30; C30B; C30B31/00; C30B31/04; H10D10/00; H10D99/00; H10P; H10P95/00; H10P95/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
THE METHOD OF FORMING AN EMITTER IN A BODY OF SEMICONDUCTOR MATERIAL OF ONE CONDUCTIVITY TYPE COMPRISING ALLOYING AND RECRYSTALLIZING INTO SAID BODY AN ACTIVATOR MATERIAL OF THE OPPOSITE CONDUCTIVITY-INDUCING TYPE TO FORM A FIRST REGION OF SAID OPPOSITE CONDUCTIVITY TYPE IN SAID BODY, ALLOYING AND RECRYSTALLIZING ANOTHER ACTIVATOR MATERIAL HAVING HIGHER SOLID SOLUBILITY IN SAID SEMICONDUCTOR MATERIAL AND OF SAID OPPOSITE CONDUCTIVITY INDUCING TYPE IN SAID FIRST REGION OF SAID BODY TO FORM A SECOND REGION THEREIN OF MORE STRONGLY OPPOSITE CONDUCTIVITY TYPE.
Claim 2
Independent Claim
84 words
THE METHOD OF FORMING AN EMITTER IN A BODY OF SEMICONDUCTOR MATERIAL OF ONE CONDUCTIVITY TYPE COMPRISING ALLOYING AND RECRYSTALLIZING INTO SAID BODY AN ACTIVATOR MATERIAL OF THE OPPOSITE CONDUCTIVITY-INDUCING TYPE TO FORM A FIRST REGION OF SAID OPPOSITE CONDUCTIVITY TYPE IN SAID BODY, ALLOYING AND RECRYSTALLIZING ANOTHER ACTIVATOR MATERIAL HAVING HIGHER SOLID SOLUBILITY IN SAID SEMICONDUCTOR MATERIAL AND OF SAID OPPOSITE CONDUCTIVITY INDUCING TYPE IN SAID FIRST REGION OF SAID BODY TO FORM A SECOND REGION THEREIN OF MORE STRONGLY OPPOSITE CONDUCTIVITY TYPE.
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) | 1961-12-01 | 1962-06-02 | 1962-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-01 | 1966-06-02 | 1966-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-01 | 1970-06-02 | 1970-12-02 | $7700.00 | Window Closed / Lapsed |