CHIYODA Corporation was created by the enthusiasm of Mr. Akiyoshi Tamaki, who had been a manager of the construction division at Mitsubishi Oil Co., Ltd. (currently NIPPON OIL & Energy). Mr. Tamaki, in anticipation of the resumption of the petroleum refining business in postwar days, committed himself to the creation of an advanced engineering company specializing in industrial facilities, and retained some of the engineers in Mitsubishi Oil, which had been substantively liquidated just after World War II. With the support of the senior executives of Mitsubishi Oil, he established CHIYODA Corporation in January 1948, two years after the war, with 25 employees. Mr. Shigeo Okubo, who had been the president of Mitsubishi Oil at the end of the war, was eventually persuaded by Mr. Tamaki to become the first president of the new company.