On May 1, 2015, Denka celebrates its centennial.

Ever since its founding, Denka has created a wealth of products by applying its carbide manufacturing technology and pursued the ultimate in (Japanese-style craftsmanship) while changing its output in response to the needs of the times.


Initial period

Denki Kagaku Kogyo Kabushiki Kaisha (Denka) was established in 1915 around Hokkai Carbide Plant, which was set up by Dr.Tsuneichi Fujiyama in the city of Tomakomai, Hokkaido in 1912. At its start, it produced carbide and a nitrogenous lime (calcium cyanamide) fertilizer derived from carbide, by using the electricity from hydropower generation as energy to sinter limestone and coke

Dr. Tsuneichi Fujiyama, the pioneer of carbide industry in Japan

In 1902, Dr. Fujiyama became the first in Japan to successfully manufacture carbide, at a plant in Sankyozawa, outside the city of Sendai. He was also the first to introduce technology for manufacture of calcium cyanamide(nitrogenous limestone) from carbide into Japan, and opened the Hokkai Carbide Plant in the city of Tomakomai in 1912. His achievements had a tremendous influence on the subsequent growth of chemical industry in Japan.


Period of core business expansion

Research in acetylene-based organic synthesis spawned all sorts of organic chemical products. We also moved into the field of synthetic resin and built it into the foundation of our business as a chemicals manufacturer. Born from effective use of limestone, our cement business eventually evolved into a business in creative special cement additives along with the deepening of our chemicals technology.


Period of speciality business expansion

We created advanced products by combining the inorganic and organic technologies accumulated over our long years of activity. Our group of heat-dissipation materials and products are at the center of our growth strategy in the field of electronic materials. Meanwhile, our research in the area of organic fine chemicals evolved into biotechnology research and led to our development of business in pharmaceuticals such as hyaluronic acid.


Denka launched the Denka100 management plan in 2007, laying out its basic business policies and setting numerical targets for business performance, while developing an operating base with the strength to last for the next 100 years.

2015 2015
  • The company's name was changed to
    Denka Co., Ltd.
Toward the next 100 years