US2967338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foundry core sand compositions
Assignee: Dow Chemical Co
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Filing: 1958-01-16
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Granted: 1961-01-10
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Expires: 1978-01-16
Abstract
No abstract record available.
Inventors
- 👤 Ronald H Cooper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:37
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/20; B22C1/24; B22C1/205
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
COMPOSITION FOR THE FABRICATION OF FOUNDRY CORES AND MOLDS WHICH COMPRISES (1) A PREPONDERANT PROPORTION OF SAND, (2) A BINDING MINOR QUANTITY OF FROM ABOUT 1 TO 4 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF THE COMPOSITION, OF A CORE OIL, AND (3) A SMALL QUANTITY OF FROM 1 TO 15 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF THE CORE OIL IN THE COMPOSITION, OF THE PARTIAL HYDROLYZATE OF THE ALKOXYLATED MIXTURE OF BY-PRODUCED CHLOROSILICON COMPOUNDS OBTAINED FROM THE REACTION OF METHYL CHLORIDE AND SILICON AS AN ADDITIVE IN SAID COMPOSITION, THE ORGANOSILICON MATERIAL IN SAID ALKOXYLATED MIXTURE HAVING AT LEAST ABOUT 3 WEIGHT PERCENT OF SILICONBONDED ALKOXY GROUPS AND AN AVERAGE OF FROM ABOUT 0.9 TO 1.2 MONOVALENT HYDROCARBON ATOMS PER SILICON ATOM THEREIN.
Claim 2
Dependent Claim
127 words
COMPOSITION FOR THE FABRICATION OF FOUNDRY CORES AND MOLDS WHICH COMPRISES (1) A PREPONDERANT PROPORTION OF SAND, (2) A BINDING MINOR QUANTITY OF FROM ABOUT 1 TO 4 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF THE COMPOSITION, OF A CORE OIL, AND (3) A SMALL QUANTITY OF FROM 1 TO 15 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF THE CORE OIL IN THE COMPOSITION, OF THE PARTIAL HYDROLYZATE OF THE ALKOXYLATED MIXTURE OF BY-PRODUCED CHLOROSILICON COMPOUNDS OBTAINED FROM THE REACTION OF METHYL CHLORIDE AND SILICON AS AN ADDITIVE IN SAID COMPOSITION, THE ORGANOSILICON MATERIAL IN SAID ALKOXYLATED MIXTURE HAVING AT LEAST ABOUT 3 WEIGHT PERCENT OF SILICONBONDED ALKOXY GROUPS AND AN AVERAGE OF FROM ABOUT 0.9 TO 1.2 MONOVALENT HYDROCARBON ATOMS PER SILICON ATOM THEREIN.
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) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |