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Among the various plastics, phenolic resin has the oldest history. It was developed by Dr. Leo H. Baekeland, an American of Belgian ancestry, in 1907 and he named that synthetic resin “Bakelite”. In 1911, Sankyo Company (currently Daiichi Sankyo Co., Ltd.) was assigned the rights to execute the patents in Japan through the good offices of Dr. Jokichi Takamine, a close friend of Dr. Baekeland. Trial production of phenolic resin was started at the Shinagawa Plant of Sankyo Company. That was the origin of the Japan's plastics industry, and the name of our company came from this achievement.
In 1932, the phenolic resin business of Sankyo Co., Ltd. was separated and formed Nippon Bakelite Co., Ltd. In 1955, Nippon Bakelite Co., Ltd. merged with Sumitomo Synthetic Resin Industries, Ltd. to found Sumitomo Bakelite Co., Ltd. As a pioneer in plastics, with our expertise in and up-to-date facilities for plastics, we have been always developing new technologies for use in various fields in order to contribute to establishing safe and comfortable living.
| Overview | |
|---|---|
| Corporate Name | Sumitomo Bakelite Co., Ltd. |
| Head Office | 5-8 Higashi-Shinagawa 2-chome, Shinagawa-ku, Tokyo 140-0002, Japan |
| President and Representative Director | SHinichi Kajiya |
| Established | January 25, 1932 |
| Capital (as of March 31, 2026) |
¥37.143 billion |
| Number of Shareholders (as of March 31, 2026) |
12,792 |
| Stock listing (as of March 31, 2026) |
Tokyo Stock Exchange, Prime Market |
| Employees (as of March 31, 2026) |
7,524*1 (Consolidated) / 1,684 (Non-consolidated) |
| Revenue (for the year ended on March 31, 2026) |
¥319.9 billion (Consolidated) / ¥109.6 billion (Non-consolidated) |
| Branch Offices | Osaka, Nagoya |
| Facility Office | Kobe |
| Research Laboratories | Kobe, Amagasaki, Kanuma, Fujieda, Utsunomiya, Nogata |
| Plants | Amagasaki, Kanuma, Fujieda, Utsunomiya |
| Account Settlement | Closing on March 31 |
*1 Of the 7,524 consolidated employees, 1,684 were non-consolidated employees, 1,441 were employees of subsidiary companies in Japan, 4,329 were employees of overseas subsidiaries, and 70 officers of subsidiary companies in and outside Japan (31 officers of subsidiary companies in Japan and 39 officers of overseas subsidiaries).
- 2026/07/17CompanyNotice Concerning Completion of Payment for Disposal of Treasury Shares as Restricted Stock Compensation Plan（PDF 115KB）
- 2026/06/24CompanyNotice Concerning Disposal of Treasury Shares as Restricted Stock Compensation（PDF 135KB）
- 2026/02/03CompanyParticipation as a Gold Sponsor in the 160th Anniversary of Friendship between Belgium and Japan
- 2026/01/22CompanyNotice Concerning Acquisition of Shares of Newly Established Company That Will Succeed Part of Chemical Business of Kyocera Corporation by Absorption-Type Company Split
- 2025/07/18CompanyNotice Concerning Completion of Payment for Disposal of Treasury Shares as Restricted Stock Compensation Plan
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