US2743199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of zone refining an elongated body of metal
Assignee: Westinghouse Electric Corp
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Filing: 1955-03-30
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Granted: 1956-04-24
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Expires: 1975-03-30
Abstract
No abstract record available.
Inventors
- 👤 Frederick C Hull
- 👤 Porter H Brace
- 👤 Comenetz George
- 👤 Alexander W Cochardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:06
CPC Classifications
C; C30; C30B; C30B13/00; C30B13/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
IN THE PROCESS OF ZONE REFINING AN ELONGATED! SOLID BODY OF A METAL WITHOUT SUBJECTING ANY OF THE METAL MELTED DURING THE PROCESS TO CONTACT WITH A FOREGN BODY, THE STEPS COMPRISING PASSING AND DISTRIBUTING AN ELECTRICAL CURRENT THROUGH THE ELONGATED BODY AT A CURRENT DENSITY SUFFICIENT TO CAUSE THE HIGHEST AMPERAGE TO FLOW THROUGH A GIVEN CROSS-SECTION OF THE ELONGATED BODY TO CAUSE ONLY THE INTERIOR PORTION AT SAID GIVEN CROSS-SECTION TO REACH A TEMPERATURE ABOVE THE MELTING POINT OF THE METAL, THEREBY PRODUCING WITHIN THE INTERIOR OF THE ELONGATED BODY AT SAID CROSS-SECTION A MOLTEN ZONE OF A LENGTH A SMALL FRACTION OF THE ENTIRE LENGTH OF THE ELONGATED BODY, WITHDRAWING HEAT FROM THE EXTERIOR SURFACE OF THE ELONGATED BODY TO MAINTAIN THE EXTERIOR SURFACE AT A TEM-
Claim 2
Dependent Claim
130 words
IN THE PROCESS OF ZONE REFINING AN ELONGATED! SOLID BODY OF A METAL WITHOUT SUBJECTING ANY OF THE METAL MELTED DURING THE PROCESS TO CONTACT WITH A FOREGN BODY, THE STEPS COMPRISING PASSING AND DISTRIBUTING AN ELECTRICAL CURRENT THROUGH THE ELONGATED BODY AT A CURRENT DENSITY SUFFICIENT TO CAUSE THE HIGHEST AMPERAGE TO FLOW THROUGH A GIVEN CROSS-SECTION OF THE ELONGATED BODY TO CAUSE ONLY THE INTERIOR PORTION AT SAID GIVEN CROSS-SECTION TO REACH A TEMPERATURE ABOVE THE MELTING POINT OF THE METAL, THEREBY PRODUCING WITHIN THE INTERIOR OF THE ELONGATED BODY AT SAID CROSS-SECTION A MOLTEN ZONE OF A LENGTH A SMALL FRACTION OF THE ENTIRE LENGTH OF THE ELONGATED BODY, WITHDRAWING HEAT FROM THE EXTERIOR SURFACE OF THE ELONGATED BODY TO MAINTAIN THE EXTERIOR SURFACE AT A TEM-
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-24 | 1959-10-24 | 1960-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-24 | 1963-10-24 | 1964-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-24 | 1967-10-24 | 1968-04-24 | $7700.00 | Window Closed / Lapsed |