Patent US2867498A successfully refreshed from Google Patents.
US2867498A
Expired / Lapsed
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Method for the separation of lithium aluminum hydride from aluminum hydride
Assignee: Olin Corp
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Filing: 1955-06-15
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Granted: 1959-01-06
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Expires: 1975-06-15
Abstract
No abstract record available.
Inventors
- 👤 John S Roscoe
- 👤 George W Schaeffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:28
CPC Classifications
C; C01; C01B; C01B6/00; C01B6/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A METHOD FOR THE SEPARATION OF LITHIUM ALUMINUM HYDRIDE FROM ALUMINUM HYDRIDE IN ADMIXTURE THEREWITH. THE ALUMINUM HYDRIDE BEING PRESENT IN AN AMOUNT LESS THAN ABOUT 10% BY WEIGHT, WHICH COMPRISES CONTACTING THE MIXTURE OF LITHIUM ALUMINUM HYDRIDE AND ALUMINUM HYDRIDE WITH A MOLAR AMOUNT, BASED ON THE MOLES OF ALUMINUM HYDRIDE AND LITHIUM ALUMINUM HYDRIDE PRESENT, OF A LOWER TERTIARY ALKYL AMINE WHILE THE REACTANTS ARE IN ADMIXTURE WITH A LOWER DIALKYL ETHER THEREBY FORMING A PRECIPITATE CONSISTING OF 1:1 MOLAR OF ADDITION PRODUCT THE LITHIUM ALUMINUM HYDRIDE AND THE LOWER TERTIARY ALKYL AMINE, AND SEPARATING THE PRECINITATE FROM THE REACTION MIXTURE.
Claim 2
Independent Claim
103 words
A METHOD FOR THE SEPARATION OF LITHIUM ALUMINUM HYDRIDE FROM ALUMINUM HYDRIDE IN ADMIXTURE THEREWITH. THE ALUMINUM HYDRIDE BEING PRESENT IN AN AMOUNT LESS THAN ABOUT 10% BY WEIGHT, WHICH COMPRISES CONTACTING THE MIXTURE OF LITHIUM ALUMINUM HYDRIDE AND ALUMINUM HYDRIDE WITH A MOLAR AMOUNT, BASED ON THE MOLES OF ALUMINUM HYDRIDE AND LITHIUM ALUMINUM HYDRIDE PRESENT, OF A LOWER TERTIARY ALKYL AMINE WHILE THE REACTANTS ARE IN ADMIXTURE WITH A LOWER DIALKYL ETHER THEREBY FORMING A PRECIPITATE CONSISTING OF 1:1 MOLAR OF ADDITION PRODUCT THE LITHIUM ALUMINUM HYDRIDE AND THE LOWER TERTIARY ALKYL AMINE, AND SEPARATING THE PRECINITATE FROM THE REACTION MIXTURE.
References Cited (Backward Citations)
US2656243A
Cited
US2680059A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |