工部大学校
was a Japanese businessman. A graduate of the Imperial College of Engineering (Kobu Daigaku) in Tokyo, he worked as a telegraph engineer for the Japanese government. He left Japan in 1886 and traveled to New York. He was introduced to Charles Batchelor, an assistant of Thomas Edison. Iwadare was hired to work in an Edison facility in Manhattan at Goerck Street. Iwadare was transferred to Edison Machine Works in Schenectady, New York in January 1887.