US2516659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of lithium halides
Assignee: Dow Chemical Co
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Filing: 1948-06-18
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Granted: 1950-07-25
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Expires: 1968-06-18
Abstract
No abstract record available.
Inventors
- 👤 Vernon A Stenger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:27
CPC Classifications
C; C01; C01D; C01D15/00; C01D15/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
THE METHOD OF TREATING LITHIUM-SODIUM PHOSPHATE SO AS TO PREPARE THEREFROM A HALIDE SELECTED FROM THE GROUP CONSISTING OF THE BROMIDE AND CHLORIDE OF LITHIUM WHICH COMPRISES REACTING A HOT AQUEOUS SLURRY OF THE FINELY DIVIDED PHOSPHATE WITH A HOT AQUEOUS SOLUTION OF THE CORRESPONDING HALIDE OF ONE OF THE TRIVALENT METALS ALUMINUM AND IRON, WHEREBY TO PRECIPITATE THE PHOSPHATE IN COMBINATION WITH THE TRIVALENT METAL AND FORM THE CORRESPONDING HALIDE OF LITHIUM.
Claim 2
Independent Claim
73 words
THE METHOD OF TREATING LITHIUM-SODIUM PHOSPHATE SO AS TO PREPARE THEREFROM A HALIDE SELECTED FROM THE GROUP CONSISTING OF THE BROMIDE AND CHLORIDE OF LITHIUM WHICH COMPRISES REACTING A HOT AQUEOUS SLURRY OF THE FINELY DIVIDED PHOSPHATE WITH A HOT AQUEOUS SOLUTION OF THE CORRESPONDING HALIDE OF ONE OF THE TRIVALENT METALS ALUMINUM AND IRON, WHEREBY TO PRECIPITATE THE PHOSPHATE IN COMBINATION WITH THE TRIVALENT METAL AND FORM THE CORRESPONDING HALIDE OF LITHIUM.
References Cited (Backward Citations)
US2414974A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-24 | 1954-01-23 | 1954-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-24 | 1958-01-23 | 1958-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-24 | 1962-01-23 | 1962-07-25 | $7700.00 | Window Closed / Lapsed |