Patent US2779672A successfully refreshed from Google Patents.
US2779672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating molten magnesium
Assignee: Dow Chemical Co
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Filing: 1953-10-30
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Granted: 1957-01-29
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Expires: 1973-10-30
Abstract
No abstract record available.
Inventors
- 👤 Douglas S Chisholm
- 👤 William P Saunders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:08
CPC Classifications
C; C22; C22B; C22B26/00; C22B26/20; C22B26/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
THE METHOD OF TREATING A MOLTENBODY OF MAGNESIUM CCONTAINING AT LEAST ONE OF THE METALS IRON, ALUMINUM, AND MANGANESE AS AN IMPURITY WHICH COMPRISES MAINTAINING UNDER AND IN CONTACT WITH THE BODY OF MOLTEN MAGNESIUM TO BE PURIFIED A QUANTITY OF A SALINE FLUX THEREFOR HAVING A GREATER DENSITY THAN THE SAID MOLTEN MAGNESIUM AND BEING INERT TO TITANIUM TETRACHLORIDE, PASSING TITANIUM TETRACHLORIDE VAPOR INTO THE MOLTEN MAGNESIUM THROUGH THE FLUX UNDER THE MOLTEN MAGNESIUM IN AN AMOUNT SUFFICIENT TO PURIFY THE MOLTEN MAGNESIUM WHEREBY METALLIC TITANIUM IS PRECIPITATED IN THE MOLTEN MAGNESIUM SEQUESTERING IMPURITIES THEREIN, AND SEPARATING THE SO-TREATED MOLTEN MAGNESIUM FROM THE PRECIPITATED TITANIUM.
Claim 2
Independent Claim
106 words
THE METHOD OF TREATING A MOLTENBODY OF MAGNESIUM CCONTAINING AT LEAST ONE OF THE METALS IRON, ALUMINUM, AND MANGANESE AS AN IMPURITY WHICH COMPRISES MAINTAINING UNDER AND IN CONTACT WITH THE BODY OF MOLTEN MAGNESIUM TO BE PURIFIED A QUANTITY OF A SALINE FLUX THEREFOR HAVING A GREATER DENSITY THAN THE SAID MOLTEN MAGNESIUM AND BEING INERT TO TITANIUM TETRACHLORIDE, PASSING TITANIUM TETRACHLORIDE VAPOR INTO THE MOLTEN MAGNESIUM THROUGH THE FLUX UNDER THE MOLTEN MAGNESIUM IN AN AMOUNT SUFFICIENT TO PURIFY THE MOLTEN MAGNESIUM WHEREBY METALLIC TITANIUM IS PRECIPITATED IN THE MOLTEN MAGNESIUM SEQUESTERING IMPURITIES THEREIN, AND SEPARATING THE SO-TREATED MOLTEN MAGNESIUM FROM THE PRECIPITATED TITANIUM.
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) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |