Patent US3600203A successfully refreshed from Google Patents.
US3600203A
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US
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Fluidized molding material for manufacturing cores and molds and a method therefor
Assignee: CENTRO SPERIMENTALE METALLURGICO SOC PER AZIONI
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Filing: 1969-09-05
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Granted: 1971-08-17
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Expires: 1989-09-05
Abstract
Abstract THE FLUIDIZED MOLDING MATERIAL CONTAINS SAND, AN ALUMINOUS CEMENT OR A MIXTURE OF ALUMINOUS CEMENT WITH OTHER CEMENTS, A LITHIUM SALT WHICH IS AN ACCELERATING AGENT FOR THE SETTING OF THE ALUMINOUS CEMENT, A TENSIOACTIVE AGENT WITH A FOAMING ACTION AND WATER AND IS PREPARED BY MIXING THESE COMPONENTS. THE SETTING TIME OF THIS MOLDING MATERIAL MAY BE VARIED WITHOUT SUBSTANTIAL CHANGE IN THE MECHANICAL STRENGTH OF THE CAST PRODUCT BY VARYING THE PROPORTION OF LITHIUM SALT.
Inventors
- 👤 Adolfo Aldera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:07
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/18; B22C1/181
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-16 | 1975-02-15 | 1975-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-16 | 1979-02-15 | 1979-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-16 | 1983-02-15 | 1983-08-17 | $7700.00 | Window Closed / Lapsed |