Hitoshi Ohtaki, Japanese coordination chemistry educator. Recipient Matsunaga prize Matsunaga Science Foundation, 1976, Tejima Memorial award Tejima Foundation for Science and Technology, 1989, Takei prize, Electrochemical Society of Japan, 1990, National Medal of Purple Ribbon Government of Japan, 1995, Kato Memorial lectureship, 1999,Science Merits prize Electrochemical Society Japan., 2000.