US2949348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation process
Assignee: AT&T Inc
•
Filing: 1958-04-23
•
Granted: 1960-08-16
•
Expires: 1978-04-23
Abstract
No abstract record available.
Inventors
- 👤 William G Pfann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:48
CPC Classifications
C; C30; C30B; C30B13/00; C30B13/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
THE METHOD FOR REDISTRIBUTING INGREDIENTS OF A FUSIBLE MATERIAL CONTAINING AT LEAST ONE SOILUTE HAVING A LIQUID SOLID DISTRIBUTION COEFFICIENT WHICH DIFFERS FROM UNITY IN SUCH MATERIAL, COMPRISING ESTABLISHING IN A SOLID PHASE OF THE SAID FUSIBLE MATERIAL AT LEAST TWO MOVING SOLIDLIQUID INTERFACES HAVING DISTINCT PATHS OF TRAVERSAL AND ESTABLISHING AT AT LEAST TWO POSITIONS ALONG EACH OF 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 SOLID-LIQUID INTERFACES MOVING UNIDIRECTIONALLY WITH RESPECT TO THE SAID TRANSFER PATHS, THE SAID TRANSFER PATHS BEING IN OPPOSITE DIRECTION RELATIVE TO THE SAID TRAVERSAL PATHS, AND RECYCLING AT LEAST A PORTION OF THE MATERIAL WITHDRAWN FROM THE TERMINUS OF EACH OF THE SAID TRANSFER PATHS THROUGH EACH OF THE OTHER TRANSFER PATHS.
Claim 2
Independent Claim
141 words
THE METHOD FOR REDISTRIBUTING INGREDIENTS OF A FUSIBLE MATERIAL CONTAINING AT LEAST ONE SOILUTE HAVING A LIQUID SOLID DISTRIBUTION COEFFICIENT WHICH DIFFERS FROM UNITY IN SUCH MATERIAL, COMPRISING ESTABLISHING IN A SOLID PHASE OF THE SAID FUSIBLE MATERIAL AT LEAST TWO MOVING SOLIDLIQUID INTERFACES HAVING DISTINCT PATHS OF TRAVERSAL AND ESTABLISHING AT AT LEAST TWO POSITIONS ALONG EACH OF 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 SOLID-LIQUID INTERFACES MOVING UNIDIRECTIONALLY WITH RESPECT TO THE SAID TRANSFER PATHS, THE SAID TRANSFER PATHS BEING IN OPPOSITE DIRECTION RELATIVE TO THE SAID TRAVERSAL PATHS, AND RECYCLING AT LEAST A PORTION OF THE MATERIAL WITHDRAWN FROM THE TERMINUS OF EACH OF THE SAID TRANSFER PATHS THROUGH EACH OF THE OTHER TRANSFER PATHS.
References Cited (Backward Citations)
US2541069A
Cited
US2739046A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-16 | 1964-02-15 | 1964-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-16 | 1968-02-15 | 1968-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-16 | 1972-02-15 | 1972-08-16 | $7700.00 | Window Closed / Lapsed |