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Company name Idemitsu Kosan Co.,Ltd.
Head office

1-1 Marunouchi 3-chome, Chiyoda-ku, Tokyo 100-8321 Japan

President and Representative Director Shunichi Kito
Date established March 30, 1940
Capital Stock 168.4 billion yen
Net Sales 3,730.7 billion yen(FY2017)
Number of Employees (consolidated) 9,139employees (As of March 31, 2017)
Not including temporary employees

What We Do

  • Petroleum refining and manufacture and sale of oil products
  • Manufacture and sale of petrochemical products
  • Exploration, development, and extraction of petroleum, coal, geothermal resources, and other mineral resources
  • Manufacture of agricultural chemicals, agricultural materials, and other chemicals
  • Development, manufacture, and sale of functional electronic materials
  • Design, installation, fabrication, and sale of various machinery, equipment, and devices for chemical-industrial and environmental-protection uses
  • Real-estate sales, leasing, and management
  • Computer-software development, sales, and consulting
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