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US2926075A
Expired / Lapsed
US
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Continuous zone refining using cross-flow
Assignee: AT&T Inc
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Filing: 1958-03-05
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Granted: 1960-02-23
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Expires: 1978-03-05
Abstract
No abstract record available.
Inventors
- 👤 William G Pfann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:19
CPC Classifications
C; C30; C30B; C30B13/00; C30B13/005; Y; Y10; Y10S; Y10S148/00; Y10S148/152; Y10S420/00; Y10S420/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A ZONE-MELTING METHOD FOR REDISTRIBUTING THE INGREDIENTS OF A FUSIBLE MATERIAL CONTAINING AT LEAST ONE SOLUTE HAVING A LIQUID-SOLID DISTRUBTION COEFFICIENT WHICH DIFFERS FROM UNITY IN SUCH MATERIAL, COMPRISING ESTABLISHING IN A SOLID PHASE OF THE SAID FUSIBLE MATERIAL AT LEAST TWO MOVING MOLTEN ZONES HAVING DISTINCT PATHS OF TRAVERSAL, AND ESTABLISHING AT LEAST TWO POSITIONS ALONG THE SAID TRAVERSAL PATHS A MATERIAL TRANSFER PATH TRANSVERSE TO THE SAID TRAVERSAL PATHS, THE RELATIONSHIP BETWEEN TRAVERSAL PATHS AND TRANSFER PATHS BEING SUCH THAT THE SAID AT LEAST TWO MOLTEN ZONES MOVE UNDIRECTIONALLY WITH
Claim 2
Dependent Claim
92 words
A ZONE-MELTING METHOD FOR REDISTRIBUTING THE INGREDIENTS OF A FUSIBLE MATERIAL CONTAINING AT LEAST ONE SOLUTE HAVING A LIQUID-SOLID DISTRUBTION COEFFICIENT WHICH DIFFERS FROM UNITY IN SUCH MATERIAL, COMPRISING ESTABLISHING IN A SOLID PHASE OF THE SAID FUSIBLE MATERIAL AT LEAST TWO MOVING MOLTEN ZONES HAVING DISTINCT PATHS OF TRAVERSAL, AND ESTABLISHING AT LEAST TWO POSITIONS ALONG THE SAID TRAVERSAL PATHS A MATERIAL TRANSFER PATH TRANSVERSE TO THE SAID TRAVERSAL PATHS, THE RELATIONSHIP BETWEEN TRAVERSAL PATHS AND TRANSFER PATHS BEING SUCH THAT THE SAID AT LEAST TWO MOLTEN ZONES MOVE UNDIRECTIONALLY WITH
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) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |