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Company History

  • The House of Sumitomo establishes an independently managed fertilizer plant at Niihama, Ehime prefecture.
  • Operations commence and the first shipment of calcium superphosphate fertilizer leaves the plant.
  • Sumitomo Fertilizer Manufacturing Co., Ltd. is incorporated with operations at what is now the Ehime Works.
Sumitomo Fertilizer Manufacturing Co., Ltd.
  • Sumitomo Fertilizer Manufacturing changes its name to Sumitomo Chemical Co., Ltd.
  • Sumitomo Chemical acquires Japan Dyestuff Manufacturing Company, diversifying into dyestuffs and pharmaceuticals at the present-day Osaka Works and Oita Works.
Japan Dyestuff Manufacturing Company
  • Sumitomo Chemical takes over the aluminum business of Sumitomo Aluminium Smelting Co., Ltd.
  • Sumitomo Chemical starts production of ethylene and its derivatives, diversifying into the petrochemical business at its Ehime Works.
Ethylene plant, Ehime Works
  • The Takatsuki Research Laboratory is completed, serving as the Company's central laboratory (closed in March 2003).
  • Sumitomo Chiba Chemical Co., Ltd. is established and is fully acquired in 1975 at the present-day Chiba Works.
Sumitomo Chiba Chemical Co., Ltd.
  • The Takarazuka Research Center is established to reinforce research and development activities for pharmaceuticals and crop protection.
  • The aluminum operation is transferred to the newly formed Sumitomo Aluminium Co., Ltd., subsequently dissolved in 1986.
  • The Misawa Works is opened to expand production of pyrethroid household insecticides.
  • P.T. Indonesia Asahan Aluminium starts operations.
P.T. Indonesia Asahan Aluminium
  • Sumitomo Chemical suspends ethylene and derivatives production at its Ehime Works and concentrates production at its Chiba Works.
  • Sumitomo Pharmaceuticals Co., Ltd. is established by consolidating the pharmaceutical operations of Sumitomo Chemical and Inabata & Co., Ltd. and commences operation the same year.
  • The petrochemical complex in Singapore begins operations.
Press conference to announce the establishment of Sumitomo Pharmaceuticals (now Sumitomo Dainippon Pharma) Petrochemical Corporation of Singapore (Pte.) Ltd.
  • The Biochemistry & Toxicology Laboratory, subsequently renamed the Environmental Health Science Laboratory, is established at the Osaka Works.
  • The Tsukuba Research Laboratory is established.
  • The petrochemical complex in Singapore commences operation of its second phase expansion project, bringing the total ethylene capacity to one million tons per year.
  • Facilities in Singapore for the manufacture of acrylic acid and its derivatives, including methyl methacrylate resins, are completed.
MMA project in Singapore
  • Sumitomo Chemical establishes Genomic Science Laboratory, operated jointly with Sumitomo Pharmaceuticals.
  • Sumitomo Chemical establishes the IT-related Chemicals Sector as a new business sector.
  • Sumitomo Chemical Takeda Agro Co., Ltd., a joint venture between Sumitomo Chemical and Takeda Chemical Industries, Ltd., succeeds Takeda Chemical's agrochemical business and commences operation (fully acquired in 2007).
  • Sumitomo Chemical opens a plant for the integrated production of LCD polarizing film at its subsidiary Dongwoo Fine-Chem Co., Ltd. in Korea and commences operation.
Dongwoo Fine-Chem's polarizing film plant
  • Sumitomo Chemical opens a plant for the integrated production of polarizing film for LCD displays at its subsidiary Sumika Technology Co., Ltd. in Taiwan.
  • Sumitomo Chemical establishes equally owned joint venture Rabigh Refining and Petrochemical Company (Petro Rabigh) together with Saudi Aramco.
  • Sumitomo Pharmaceuticals and Dainippon Pharmaceutical merge to form Dainippon Sumitomo Pharma.
Groundbreaking ceremony at Petro Rabigh
  • Sumitomo Chemical acquires UK company Cambridge Display Technology, a pioneer in the development of polymer organic LEDs and related devices, and makes it a wholly owned subsidiary.
  • Petro Rabigh's integrated refining and petrochemical complex starts operation of its ethane cracker, its core plant.
  • Dainippon Sumitomo Pharma acquires US pharmaceuticals company Sepracor Inc. (now Sunovion Pharmaceuticals Inc.)
  • Sumitomo Chemical eliminates the Fine Chemicals Sector and the businesses in this sector are split up and transferred to the Basic Chemicals Sector and the Health & Crop Sciences Sector (former Agricalturel Chemicals Sector).
  • Sumitomo Chemical eliminates the Basic Chemicals Sector and the businesses in this sector are split up and transferred to the Petrochemicals & Plastics Sector and the Energy & Functional Materials Sector which is established as a new business sector.