The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 04, 2001
Filed:
Oct. 25, 1999
Hidetoshi Inoue, Toyama, JP;
Kazuhiko Kikuya, Toyama, JP;
Hitoshi Machimura, Toyama, JP;
Yukio Matsubara, Toyama, JP;
Fuji Chemical Industry Co., Ltd., Toyama, JP;
Abstract
A process for preparing a spinel lithium manganese complex oxide having the general formula Li,Mn,Al,O,(wherein 0.9≦x≦1.1, and 0.002≦y≦0.5) the process comprising the steps of reacting a manganese complex hydroxide represented by the general formula (IIa) Mn,Al,(OH),(A,),·mH,O (wherein A,is an anion having a valence n, 0.001≦a≦0.25, 0.03<z<0.3 and 0<m) with a water-soluble lithium compound in a molar ratio of Li/(Mn+Al) of 0.45˜0.55 in an aqueous medium to obtain a slurry, spray- or freeze-drying the obtained slurry, and heating the resultant dry material at a temperature of 600˜900° C.