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US2817128A
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Foundry sand compositions and process of making
Assignee: Monsanto Chemicals Ltd
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Filing: 1952-05-15
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Granted: 1957-12-24
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Expires: 1972-05-15
Abstract
No abstract record available.
Inventors
- 👤 John A Wickett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:29
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/167
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A FOUNDRY SAND MOLD COMPOSITION CONSISTING ESSENTIALLY OF FOUNDRY SAND, CLAY WATER AND A POLYMERIC WATER-SOLUBLE ELECTROLYTE HAVING A WEIGHT-AVERAGE MOLECULAR WEIGHT OF AT LEAST 10,000 AND CONTAINING A SUBSTANTIALLY LINER CONTINUOUS CARBON CHAIN DERIVED BY THE POLYMERIZATION OF AN ALIPHATIC UNSATURATED GROUP, SAID COMPOSITION HAVING THE SAND IN A MAJOR PROPORTION, THE CLAY IN A MINOR PROPORTION AND THE ELECTROLYTE IN THE AMOUNT OF ABOUT 0.02 TO 1%.
Claim 2
Dependent Claim
69 words
A FOUNDRY SAND MOLD COMPOSITION CONSISTING ESSENTIALLY OF FOUNDRY SAND, CLAY WATER AND A POLYMERIC WATER-SOLUBLE ELECTROLYTE HAVING A WEIGHT-AVERAGE MOLECULAR WEIGHT OF AT LEAST 10,000 AND CONTAINING A SUBSTANTIALLY LINER CONTINUOUS CARBON CHAIN DERIVED BY THE POLYMERIZATION OF AN ALIPHATIC UNSATURATED GROUP, SAID COMPOSITION HAVING THE SAND IN A MAJOR PROPORTION, THE CLAY IN A MINOR PROPORTION AND THE ELECTROLYTE IN THE AMOUNT OF ABOUT 0.02 TO 1%.
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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) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |