Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In 1900, he graduated from the electrical engineering department of Tokyo Imperial University. Following his graduation, he joined a mining company as an engineer in its power plant. From there, he went on to several electric power companies. In 1906, he joined the Kuhara Mining Company at its Hitachi copper mine as an engineering section chief. Although his main duties at the mine were to ensure a stable supply of electricity and to maintain the mine's electrical equipment, he and his colleagues began working on the manufacture of a five horsepower electric motor. This marked the beginning of the development that would become Hitachi, which was founded by Odaira in 1910. However, because it was started as an in-house venture of the Kuhara Mining Company, the owner of Hitachi was Fusanosuke Kuhara, the President of the mining company, not Odaira.

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