US2615060A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crucible for the purification of molten substances
Assignee: General Electric Co
•
Filing: 1951-08-14
•
Granted: 1952-10-21
•
Expires: 1971-08-14
Abstract
No abstract record available.
Inventors
- 👤 John C Marinace
- 👤 Loup Theodore E Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:54
CPC Classifications
F; F27; F27B; F27B14/00; F27B14/08; F27B14/10; Y; Y10; Y10S; Y10S164/00; Y10S164/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A CRUCIBLE FOR THE PURIFICATION OF METALS COMPRISING A HORIZONTALLY EXTENDING BODY OF ELECTRICAL RESISTANCE MATERIAL, TOP, BOTTOM AND SIDE FACES ON SAID BODY, ELECTRICAL TERMINALS AT OPPOSITE ENDS OF THE BODY, SAID BODY HAVING AN INGOT MOLD CAVITY IN ITS TOP FACE EXTENDING SUBSTANTIALLY ALONG THE LENGTH OF SAID FACE, THE FACES OF SAID BODY BEING UNIFORMLY TAPERED IN CROSS SECTION FROM END TO END IN BOTH HORIZONTAL AND VERTICAL PLANES FROM A GREATEST CROSS SECTION ADJACENT ONE END TO A SMALLEST CROSS SECTION ADJACENT THE OPPOSITE END, WHEREBY, UPON APPLICATION OF CURRENT TO SAID TERMINALS, UNIFORM ENDTO-END TEMPERATURE GRADIENT WILL BE IMPRESSED ON SAID MOLD CAVITY.
Claim 2
Dependent Claim
108 words
A CRUCIBLE FOR THE PURIFICATION OF METALS COMPRISING A HORIZONTALLY EXTENDING BODY OF ELECTRICAL RESISTANCE MATERIAL, TOP, BOTTOM AND SIDE FACES ON SAID BODY, ELECTRICAL TERMINALS AT OPPOSITE ENDS OF THE BODY, SAID BODY HAVING AN INGOT MOLD CAVITY IN ITS TOP FACE EXTENDING SUBSTANTIALLY ALONG THE LENGTH OF SAID FACE, THE FACES OF SAID BODY BEING UNIFORMLY TAPERED IN CROSS SECTION FROM END TO END IN BOTH HORIZONTAL AND VERTICAL PLANES FROM A GREATEST CROSS SECTION ADJACENT ONE END TO A SMALLEST CROSS SECTION ADJACENT THE OPPOSITE END, WHEREBY, UPON APPLICATION OF CURRENT TO SAID TERMINALS, UNIFORM ENDTO-END TEMPERATURE GRADIENT WILL BE IMPRESSED ON SAID MOLD CAVITY.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |