Patent US3220070A successfully refreshed from Google Patents.
US3220070A
Expired / Lapsed
US
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Method of casting molten metal in coated ingot mold
Assignee: General Electric Co
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Filing: 1959-11-23
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Granted: 1965-11-30
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Expires: 1979-11-23
Abstract
No abstract record available.
Inventors
- 👤 Edward G Tajkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:57
CPC Classifications
B; B22; B22C; B22C3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE METHOD OF CASTING A MOLTEN METAL IN A METALLIC INGOT MOLD, WHICH COMPRISES COATING THE INTERIOR SURFACES OF SAID INGOT MOLD WITH A COMPOSITION CONSISTING ESSENTIALLY OF, BY WEIGHT, 100 PARTS OF A FLUID SILICONE HAVING A VISCOSITY AT 25*C. OF FROM 20 TO 1000000 CENTISTOKES AND FROM 5 TO 20 PARTS OF A FINELY DIVIDED SILICA, SAID COMPOSITION BEING EMPLOYED IN AN AMOUNT SUFFICIENT TO PROVIDE FROM ABOUT 0.05 TO 0.5 OUNCE OF SUCH COMPOSITION PER SQUARE FOOT OF INTERIOR SURFACE IN SAID INGOT MOLD, AND THEREAFTER POURING MOLTEN METAL INTO THE COATING INGOT MOLD.
Claim 2
Independent Claim
97 words
THE METHOD OF CASTING A MOLTEN METAL IN A METALLIC INGOT MOLD, WHICH COMPRISES COATING THE INTERIOR SURFACES OF SAID INGOT MOLD WITH A COMPOSITION CONSISTING ESSENTIALLY OF, BY WEIGHT, 100 PARTS OF A FLUID SILICONE HAVING A VISCOSITY AT 25*C. OF FROM 20 TO 1000000 CENTISTOKES AND FROM 5 TO 20 PARTS OF A FINELY DIVIDED SILICA, SAID COMPOSITION BEING EMPLOYED IN AN AMOUNT SUFFICIENT TO PROVIDE FROM ABOUT 0.05 TO 0.5 OUNCE OF SUCH COMPOSITION PER SQUARE FOOT OF INTERIOR SURFACE IN SAID INGOT MOLD, AND THEREAFTER POURING MOLTEN METAL INTO THE COATING INGOT MOLD.
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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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |