With an ordinary income of 226.91 billion yen ($2.205 billion) in fiscal 2015, Bridgestone Corp. (TYO:5108) held the top spot among 165 major Japanese rubber manufacturers, found a survey published in the September issue of Japan Rubber and Elastomers, a monthly sister publication of Japan Rubber Weekly. For Bridgestone, this marked a 0.4 percent year-on-year decline. The number two, Toyo...