Patent US3921871A successfully refreshed from Google Patents.
US2965477A
Expired / Lapsed
US
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Treatment of molten metals
Assignee: Foundry Services International Ltd
•
Filing: 1957-09-12
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Granted: 1960-12-20
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Expires: 1977-09-12
Abstract
No abstract record available.
Inventors
- 👤 Kondic Voya
- 👤 Watson Albert Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:38
CPC Classifications
C; C22; C22B; C22B9/00; C22B9/04; C22B21/00; C22B21/06; C22B21/064
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A METHOD OF SCAVENGING DISSOLVED GASES FROM MOLTEN ALUMINUM AND ALUMINUM ALLOY METAL WHICH COMPRISES ADDING TO THE MOLTEN METAL A SHAPED COMPACTED MASS OF AN INTIMATE ADMIXTURE OF HEXACHLORETHANE IN AN AMOUNT BETWEEN ABOUT 10 AND ABOUT 70% BY WEIGHT, A PARTICULATE FILLER MATERIAL WHICH IS A SOLID AT THE TEMPERATURE OF THE MOLTEN METAL IN AN AMOUNT BETWEEN ABOUT 30 AND ABOUT 90% BY WEIGHT, AND AT LEAST ONE SALT IN A SUFFICIENT AMOUNT, BETWEEN ABOUT 2% AND ABOUT 15% BY WEIGHT, TO SINTER WITH THE FILLER MATERIAL AT THE TEMPERATURE OF THE MOLTEN METAL AND FORM A STRENGTHENED SOLID BODY HAVING A METLING POINT HIGHER THAN THAT OF THE MOLTEN METAL.
Claim 2
Independent Claim
114 words
A METHOD OF SCAVENGING DISSOLVED GASES FROM MOLTEN ALUMINUM AND ALUMINUM ALLOY METAL WHICH COMPRISES ADDING TO THE MOLTEN METAL A SHAPED COMPACTED MASS OF AN INTIMATE ADMIXTURE OF HEXACHLORETHANE IN AN AMOUNT BETWEEN ABOUT 10 AND ABOUT 70% BY WEIGHT, A PARTICULATE FILLER MATERIAL WHICH IS A SOLID AT THE TEMPERATURE OF THE MOLTEN METAL IN AN AMOUNT BETWEEN ABOUT 30 AND ABOUT 90% BY WEIGHT, AND AT LEAST ONE SALT IN A SUFFICIENT AMOUNT, BETWEEN ABOUT 2% AND ABOUT 15% BY WEIGHT, TO SINTER WITH THE FILLER MATERIAL AT THE TEMPERATURE OF THE MOLTEN METAL AND FORM A STRENGTHENED SOLID BODY HAVING A METLING POINT HIGHER THAN THAT OF THE MOLTEN METAL.
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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) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |