Lithium recovery
Patent 5451383 Issued on September 19, 1995. Estimated Expiration Date: 
December 23, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 23, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2980498 2980499 3033641 Method for recovering lithium from sea water Process for recovering lithium from salt brines Process for separating nitrogen from mixtures thereof with less polar substances Nitrogen adsorption with a Ca and/or Sr exchanged lithium X-zeolite Mixed ion-exchanged zeolites and processes for the use thereof in gas separations Patent #: 5174979 InventorAssigneeApplicationNo. 172297 filed on 12/23/1993US Classes:423/179.5, Lithium210/677, Using conserved or recirculated fluid210/681, Removing ions423/181Ion exchanging or liquid-liquid extractingExaminersPrimary: Cintins, IvarsAttorney, Agent or FirmInternational ClassB01D 015/04AbstractIn the production of lithium-exchange adsorbents, lithium recovery from spent ion-exchange solutions is achieved with advantageous secondary recovery of lithium from zeolite wash liquor and precipitate salts by ion-exchange means.Field of SearchIncluding rehabilitating or regenerating exchange material or sorbentFractional, selective, or partial type Using conserved or recirculated fluid Including liquid flow direction change Removing ions Including diverse separating or treating of liquid By distilling or degassing By making an insoluble substance or accreting suspended constituents Lithium Ion exchanging or liquid-liquid extracting |
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