Zeon Corp. (TYO:4205) announced on April 1 that it has spun off the Sano plant that performs injection molding for Optes Inc., a cyclo-olefin polymer (COP) processing and manufacturing subsidiary. In establishing the new Zeon Opto Bio Lab Co. Ltd. as a result of this, Zeon plans to grow by strengthening its prototyping business in the optics, medical and bio…