Oblon, Spivak, McClelland Maier & Neustadt
Process for producing vitamin A acid
 A process for producing vitamin A acid, having useful biological activity, which comprises oxidizing vitamin A aldehyde with an aqueous solution of an alkali metal chlorite in the presence of an acid. 
Kuraray Company Ltd.
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inventional inventional additional
Takashi Hiroshi Yoshin Toshiki
Onishi Fujii Tamai Mori