Method of manufacturing ultrahydrophilic member

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PROBLEM TO BE SOLVED : To provide a manufacturing method of an ultrahydrophilic member having characteristics capable of holding ultrahydrophilicity over a long time without irradiating the ultrahydrophilic member with ultraviolet rays. ŽSOLUTION : At least one oxide selected from the group consisting of a transition metal oxide and an rare-earth element oxide is subjected to flame treatment by a burner to impart ultrahydrophilicity to the oxide or to increase or restore the ultrahydrophilicity of the oxide. ŽCOPYRIGHT : (C)2006, JPO&NCIPI Ž