富士電機
Inagaki was born in the city of Okayama. He graduated from the Economics Department of Keio University in 1913. Although he received a job offer from Mitsui Bussan, he was recruited personally by Furukawa Toranosuke, the president of the Fukukawa zaibatsu and went to work for Furukawa instead. During World War I, he was sent to Germany, where he negotiated a joint-venture, which Fuji Electric in 1923. Afterwards, he became a director of the Jiji Shimpo newspaper (1932), director of Yokohama Rubber Company (1942), president of Yokohama Rubber (1945) and chairman of Yokohama Rubber (1947).