富士電機
In 1907, Nakajima went to work for the mining consortium Fukukawa Kogyo. He helped establish Josai University in 1918. In 1920, Nakajima was instrumental in joining Furukawa Electric, Fuji Electric, Yokohama Rubber and a number of smaller companies into the Furukawa Consortium, one of the 15 largest "zaibatsu" in pre-war Japan. In 1927, he was an influential member of the Deliberation Council within the Ministry of Commerce and Industry, pushing for increased compilation of industrial statistics, loans to small and medium businesses and export industries, and the adoption of the metric system. In 1932, Nakajima joined the Saito Makoto administration as Minister of Commerce and Industry.