The story
In 1912, Tsuneichi Fujiyama founded a carbide business, Hokkai Carbide, in Tomakomai, a village in Hokkaido. One year later, Fujiyama patented his own process of producing cyanamide, the continuous cyanamide process. In 1913, Fujiyama with the help of 22 venture capitalists incorporated a reorganized Hokkai Carbide as Denki Kagaku Kogyo, the current company. Despite its legal status as an independent corporation, Denka was a Mitsui-related company. The company changed its name from Denki Kagaku Kogyo to Denka Company Limited 2015.
From Wikipedia’s article on Denka, shared under CC BY-SA 4.0.5