US2534743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sand mold composition
Assignee: Monsanto Chemicals Ltd
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Filing: 1948-11-13
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Granted: 1950-12-19
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Expires: 1968-11-13
Abstract
No abstract record available.
Inventors
- 👤 Shirley M Vincent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:43
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
64 words
A SAND CORE FOR USE IN THE CASTING OF METALS COMPRISING FOUNDRY SAND AND A REACTION PRODUCT OF GLYCERINE AND THE PRODUCT OBTAINED BY REACTING 500-3000 PARTS BY WEIGHT OF A TALL OIL VINYL ESTER WITH 100 PARTS BY WEIGHT OF MALEIC ANHYDRIDE, SAID REACTION PRODUCT HAVING AN ACID NUMBER OF LESS THAN 100, SAID SAND CORE HAVING BEEN HEAT-TREATED TO CURE THE BINDER.
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) | 1953-12-18 | 1954-06-19 | 1954-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-18 | 1958-06-19 | 1958-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-18 | 1962-06-19 | 1962-12-19 | $7700.00 | Window Closed / Lapsed |