US3591369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of adding manganese to aluminum
Assignee: Foote Mineral Co
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Filing: 1969-03-17
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Granted: 1971-07-06
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Expires: 1989-03-17
Abstract
Abstract MANGANESE METAL IS ADDED TO MOLTEN ALUMINUM IN THE FORM OF A MANGANESE BODY HAVING THEREON A COATING CONTAINING A POTASSIUM FLUORIDE AND WHICH FORMS A MOLTEN PHASE AT THE TEMPERATURE OF THE MOLTEN ALUMINUM. THERE IS PROVIDED A NOVEL MANGANESE ADDITIVE FOR THIS PURPOSE COMPRISING A BODY OF MANGANESE HAVING THE STATED COATING THEREON, AND THERE IS ALSO PROVIDED A METHOD FOR MAKING THE ADDITIVE COMPRISING PROVIDING THE STATED COATING ON A BODY OF MANGANESE.
Inventors
- 👤 Jordan P Tuthill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:29
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |