US3592637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for adding metal to molten metal baths
Assignee: Elkem Metals Co LP
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Filing: 1968-02-26
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Granted: 1971-07-13
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Expires: 1988-02-26
Abstract
Abstract A METHOD OF ADDITION OF A METAL TO A MOLTEN METAL BATH BY MIXING THE ALUMINUM TO BE DISSOLVED IN FINELY DIVIDED FORM WITH A SOLUTION PROMOTING ALUMINUM, ALSO IN FINELY DIVIDED FORM, AND ADDING THE MIXTURE TO MOLTEN METAL.
Inventors
- 👤 Charles M Brown
- 👤 Nicholas J Pappas
- 👤 Harry J Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:29
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/0006; C22; C22C; C22C1/00; C22C1/02
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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |