US3705029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispersing sodium within molten aluminum
Assignee: Dow Chemical Co
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Filing: 1971-01-06
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Granted: 1972-12-05
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Expires: 1991-01-06
Abstract
Abstract A METHOD OF DISPERSING SODIUM INTO MOLTEN ALUMINUM. A SODIUM-CONTAINING, ESSENTIALLY INSOLUBLE HEAVY METAL IS INTRODUCED INTO MOLTEN ALUMINUM AT A TEMPERATURE EXCEEDING THE MELTING TEMPERATURE OF THE SODIUM-CONTAINING HEAVY METAL. THE SODIUM DIFFUSES FROM THE HEAVY METAL INTO THE ALUMINUM TO MAINTAIN A DESIRED LEVEL OF SODIUM IN THE ALUMINUM FOR AN EXTENDED PERIOD. A SOLIDIFIED SHAPED ARTICLE HAVING A MODIFIED SILICON STRUCTURE CAN BE CAST FROM THE SODIUMIZED ALUMINUM.
Inventors
- 👤 George S Foerster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:42
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/02; C22C1/026
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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |