US2570058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of magnesia gels
Assignee: Standard Oil Development Co
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Filing: 1949-07-23
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Granted: 1951-10-02
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Expires: 1969-07-23
Abstract
No abstract record available.
Inventors
- 👤 Edward A Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:18
CPC Classifications
B; B01; B01J; B01J13/00; B01J13/0052; B01J13/0065; B01J21/00; B01J21/10; C; C07; C07C; C07C29/00; C07C29/68; C07C29/70; C07C31/00; C07C31/28; C07C31/30
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
106 words
THE METHOD WHICH COMPRISES REACTING MAGNESIUM METAL WITH AN ALKANOL CONTAINING AT LEAST FOUR CARBON ATOMS IN EACH MOLECULE IN THE PRESENCE OF A HALOGENATED HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF CHLOROFORM AND CARBON TETRACHLORIDE AND A CATALYTIC AMOUNT OF A MERCURY COMPOUND IN ORDER TO FORM THE CORRESPONDING MAGNESIUM ALCOHOLATE, HYDROLYZING THE ALCOHOLATE PERMITTING THE HYDROLYSIS REACTION MIXTURE TO SEPARATE INTO AN AQUEOUS AND AN ORGANIC LIQUID LAYER, RECOVERING HYDROUS MAGNESIA FROM THE AQUEOUS LAYER, SUBJECTING THE ORGANIC LIQUID LAYERR TO DISTILLATION TO SEPARATE RESIDUAL WATER FROM THE ORGANIC LIQUIDS AND REUSING THE ORGANIC LIQUID IN THE FORMATION OF FURTHER QUANTITIES OF MAGNESIUM ALCOHOLATE.
References Cited (Backward Citations)
US2287088A
Cited
US2491033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |