Method of synthesizing a lithium manganese oxide
Patent 4980251 Issued on December 25, 1990. Estimated Expiration Date: 
July 12, 2009. 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.
July 12, 2009. 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 ReferencesProcess for preparing mixed metal oxides Patent #: 4567031 InventorsAssigneeApplicationNo. 379422 filed on 07/12/1989US Classes:429/224, Manganese component is active material423/599Manganese (e.g., manganate, etc.)ExaminersPrimary: Niebling, John F.Assistant: Gorgos, Kathryn Attorney, Agent or FirmForeign Patent References
International ClassH01M 004/50Foreign Application Priority Data1988-07-12 ZAAbstractA method of synthesizing a lithium manganese oxide in accordance with the formula Li1-x Mn2 O4 in which 0ࣘx<1 and having a spinel-type crystal structure includes forming a mixture in finely divided solid form of at least one lithium salt such as Li2 CO3 which decomposes when heated in air to form an oxide of lithium, and at least one manganese salt such as MnCO3 which decomposes when heated in air to form an oxide of manganese. The mixture is heated in an oxidizing atmosphere to a temperature in the range 200°-600° C. to decompose the salts and to obtain the Li1-x Mn2 O4 having a spinel-type crystal structure.Other References
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