US2703296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a semiconductor element
Assignee: AT&T Inc
•
Filing: 1950-06-20
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Granted: 1955-03-01
•
Expires: 1970-06-20
Abstract
No abstract record available.
Inventors
- 👤 Gordon K Teal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:17
CPC Classifications
C; C30; C30B; C30B15/00; C30B15/36; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12528; Y10T428/12674
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
THE METHOD OF PRODUCING A SEMICONDUCTOR ELEMENT WHICH COMPRISES PARTLY IMMERSING A BODY OF SEMICONDUCTIVE MATERIAL SELECTED FROM THE GROUP CONSISTING OF GERMANIUM AND SILICON AND OF ONE CONDUCTIVITY TYPE IN A MOLTEN MASS OF SAID MATERIAL OF THE OPPOSITE CONDUCTIVITY TYPE, ROTATING SAID BODY TO PASS ITS PERIPHERAL PART THROUGH SAID MOLTEN MASS AT A SPEED TO PERMIT SOLIDIFICATION OF THE MOLTEN MATERIAL ADHERENT TO THE SURFACE OF SAID BODY AS SAID SURFACE EMERGES FROM SAID MASS, COOLING THE ADHERENT MATERIAL DURING THE ROTATING OPERATION, MAINTAINING AN INERT ATMOSPHERE ABOUT SAID BODY AND MASS, AND REMOVING SAID BODY FROM SAID MASS AFTER THE ROTATING OPERATION.
Claim 2
Independent Claim
106 words
THE METHOD OF PRODUCING A SEMICONDUCTOR ELEMENT WHICH COMPRISES PARTLY IMMERSING A BODY OF SEMICONDUCTIVE MATERIAL SELECTED FROM THE GROUP CONSISTING OF GERMANIUM AND SILICON AND OF ONE CONDUCTIVITY TYPE IN A MOLTEN MASS OF SAID MATERIAL OF THE OPPOSITE CONDUCTIVITY TYPE, ROTATING SAID BODY TO PASS ITS PERIPHERAL PART THROUGH SAID MOLTEN MASS AT A SPEED TO PERMIT SOLIDIFICATION OF THE MOLTEN MATERIAL ADHERENT TO THE SURFACE OF SAID BODY AS SAID SURFACE EMERGES FROM SAID MASS, COOLING THE ADHERENT MATERIAL DURING THE ROTATING OPERATION, MAINTAINING AN INERT ATMOSPHERE ABOUT SAID BODY AND MASS, AND REMOVING SAID BODY FROM SAID MASS AFTER THE ROTATING OPERATION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-28 | 1958-08-30 | 1959-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-28 | 1962-08-30 | 1963-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-28 | 1966-08-30 | 1967-03-01 | $7700.00 | Window Closed / Lapsed |