MnO2 derived from LiMn2 O4
Patent 4246253 Issued on January 20, 1981. Estimated Expiration Date: 
September 29, 1998. 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.
September 29, 1998. 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 3427128 3856576 Novel manganese dioxide Patent #: 3959021 InventorAssigneeApplicationNo. 05/947120 filed on 09/29/1978US Classes:423/605, Group VIIB metal (Mn, Tc, or Re)423/599, Manganese (e.g., manganate, etc.)429/224Manganese component is active materialExaminersPrimary: Carter, Herbert T.Attorney, Agent or FirmInternational ClassesC01G 45/00 (20060101)C01G 45/02 (20060101) H01M 4/50 (20060101) AbstractA new form of manganese dioxide having an x-ray diffraction pattern resembling none of the x-ray patterns of the known forms of manganese dioxide is manufactured by acid treatment of LiMn2 O4.Other References
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