Patent US3823717A successfully refreshed from Google Patents.
US2813048A
Expired / Lapsed
US
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Temperature gradient zone-melting
Assignee: AT&T Inc
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Filing: 1954-06-24
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Granted: 1957-11-12
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Expires: 1974-06-24
Abstract
No abstract record available.
Inventors
- 👤 William G Pfann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:10
CPC Classifications
H; H10; H10D; H10D99/00; C; C30; C30B; C30B13/00; C30B13/02; H10F; H10F99/00; H10P; H10P95/00; H10P95/50; H10W; H10W10/00; H10W10/01; H10W10/031; H10W10/30; Y; Y10; Y10S; Y10S148/00; Y10S148/107; Y10S420/00; Y10S420/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
THE PROCESS OF CAUSING AT LEAST ONE LIQUID-SOLID INTERFACE TO PROGRESS WITHIN A BODY OF A FIRST MATERIAL COMPRISING COMTACTING SAID BODY WITH A SECOND MATERIAL WHICH IS SOLUBLE IN THE FIRST MATERIAL, THE SAID SECOND MATERIAL BEING SUCH THAT A SOLUTION OF THE SAID SECOND MATERIAL AND THE SAID FIRST MATERIAL HAS A MELTING POINT WHICH IS LOWER THAN THAT OF THE FIRST MATERIAL, AND PRODUCING A TEMPERATURE GRADIENT ACROSS A PORTION OF THE BODY OF FIRST MATERIAL SUCH THAT THE PART OF THE BODY OF FIRST MATERIAL IN CONTACT WITH THE SAID SECOND MATERIAL IS AT A TEMPERATURE WHICH IS AT LEAST AS GREAT AS THAT OF THE LOWEST MELTING MIXTURE OF THE SAID SECOND MATERIAL AND THE SAID FIRST MATERIAL IN WHICH THE SAID SECOND MATERIAL IS SOLUBLE AND SUCH THAT SOME OTHER PART
Claim 2
Dependent Claim
137 words
THE PROCESS OF CAUSING AT LEAST ONE LIQUID-SOLID INTERFACE TO PROGRESS WITHIN A BODY OF A FIRST MATERIAL COMPRISING COMTACTING SAID BODY WITH A SECOND MATERIAL WHICH IS SOLUBLE IN THE FIRST MATERIAL, THE SAID SECOND MATERIAL BEING SUCH THAT A SOLUTION OF THE SAID SECOND MATERIAL AND THE SAID FIRST MATERIAL HAS A MELTING POINT WHICH IS LOWER THAN THAT OF THE FIRST MATERIAL, AND PRODUCING A TEMPERATURE GRADIENT ACROSS A PORTION OF THE BODY OF FIRST MATERIAL SUCH THAT THE PART OF THE BODY OF FIRST MATERIAL IN CONTACT WITH THE SAID SECOND MATERIAL IS AT A TEMPERATURE WHICH IS AT LEAST AS GREAT AS THAT OF THE LOWEST MELTING MIXTURE OF THE SAID SECOND MATERIAL AND THE SAID FIRST MATERIAL IN WHICH THE SAID SECOND MATERIAL IS SOLUBLE AND SUCH THAT SOME OTHER PART
References Cited (Backward Citations)
US1998496A
Cited
US2361962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |