US2904411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suspension of liquid material
Assignee: AT&T Inc
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Filing: 1955-06-17
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Granted: 1959-09-15
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Expires: 1975-06-17
Abstract
No abstract record available.
Inventors
- 👤 William G Pfann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:29
CPC Classifications
C; C30; C30B; C30B13/00; C30B13/16; C22; C22B; C22B4/00; C30B13/005; Y; Y10; Y10S; Y10S117/00; Y10S117/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
IN A PROCESS IN WHICH A MOLTEN REGION IS CAUSED TO TRAVERSE AT LEAST A PORTION OF A SOLID BODY BY MELTING MATERIAL OF THE SOLID BODY AT A SOLID-LIQUID INTERFACE, AND FREEZING MOLTEN MATERIAL OF THE SAID MOLTEN REGION AT A SOLID-LIQUID INTERFACE, THE PROCEDURE COMPRISING PASSING A CURRENT THROUGH A CONDUCTING CIRCUIT INCLUDING A CURRENT SOURCE AND A PORTION OF THE SAID MOLTEN REGION AND MAINTAINING A MAGNETIC FIELD ACROSS A PORTION OF THE SAID MOLTEN REGION, SUCH THAT THERE IS ON A HORIZONTAL PLANE A FIELD COMPONENT AND A CURRENT COMPONENT IN WHICH THE SAID FIELD COMPONENT IS AT AN ANGLE OF 90 DEGREES TO THE SAID CURRENT COMPONENT, MEASURED IN A COUNTER-CLOCKWISE DIRECTION AS VIEWED DOWNWARD, SUCH THAT THE SAID MOLTEN REGION IS AT ALL TIMES IN CONTACT WITH THE SAID SOLID BODY SO THAT LIQUID-SOLID CONTACT WITH THE SAID MOLTEN REGION IS LIMITED TO THAT AT THE SAID INTERFACES.
Claim 2
Dependent Claim
154 words
IN A PROCESS IN WHICH A MOLTEN REGION IS CAUSED TO TRAVERSE AT LEAST A PORTION OF A SOLID BODY BY MELTING MATERIAL OF THE SOLID BODY AT A SOLID-LIQUID INTERFACE, AND FREEZING MOLTEN MATERIAL OF THE SAID MOLTEN REGION AT A SOLID-LIQUID INTERFACE, THE PROCEDURE COMPRISING PASSING A CURRENT THROUGH A CONDUCTING CIRCUIT INCLUDING A CURRENT SOURCE AND A PORTION OF THE SAID MOLTEN REGION AND MAINTAINING A MAGNETIC FIELD ACROSS A PORTION OF THE SAID MOLTEN REGION, SUCH THAT THERE IS ON A HORIZONTAL PLANE A FIELD COMPONENT AND A CURRENT COMPONENT IN WHICH THE SAID FIELD COMPONENT IS AT AN ANGLE OF 90 DEGREES TO THE SAID CURRENT COMPONENT, MEASURED IN A COUNTER-CLOCKWISE DIRECTION AS VIEWED DOWNWARD, SUCH THAT THE SAID MOLTEN REGION IS AT ALL TIMES IN CONTACT WITH THE SAID SOLID BODY SO THAT LIQUID-SOLID CONTACT WITH THE SAID MOLTEN REGION IS LIMITED TO THAT AT THE SAID INTERFACES.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-14 | 1963-03-16 | 1963-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-14 | 1967-03-16 | 1967-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-14 | 1971-03-16 | 1971-09-15 | $7700.00 | Window Closed / Lapsed |