Mitsubishi Chemical Corporation


Established as Nippon Tar Industries
1936 Corporate name changed to Nippon Kasei Chemical Company Limited
1988 Corporate name changed to Mitsubishi Kasei Corporation
1994 Corporate name changed to Mitsubishi Chemical Corporation through the merger with Mitsubishi Petrochemical Co., Ltd.

Yoshitomi Fine Chemicals, Ltd.,
1940   Yoshitomi Pharmaceutical Industries founded 

1996  Yoshitomi Fine Chemicals, Ltd. was created by spinning off operations related to the manufacture of pharmaceutical bulk and intermediates, as well as the production and marketing of fine chemicals.

API Corporation
2002 API Corporation was established through integration of active pharmaceutical
ingredients business and a part of fine chemicals business which had been run by
Mitsubishi Chemical's Specialty Chemicals Company into Yoshitomi Fine Chemicals.

2003 Operations of the Iwaki Plant were transferred to the Company from
Mitsubishi Pharma Corporation.(currently named Mitsubishi Tanabe Pharma Corporation)