Learn about the history of the Otsuka group and its business development, viewed by year and by group company.
Timeline
1921 -
| 1921 | Busaburo Otsuka founds Otsuka Seiyaku Kogyobu. |
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| 1940 | Otsuka Seiyaku Kogyobu is renamed Otsuka Pharmaceutical Factory. |
| 1950 | Organic Chemicals Division is split off from Otsuka Pharmaceutical Factory to form Otsuka Chemical and Medical Products, Inc. (now Otsuka Chemical Co., Ltd.) |
1961 -
| 1961 | Transport and Warehousing Division is split off from Otsuka Pharmaceutical Factory to form Otsuka Warehouse Co., Ltd. |
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| 1963 | Taiho Pharmaceutical Co., Ltd. is established. |
| 1964 | Sales Division (excluding Shikoku region) is split off from Otsuka Pharmaceutical Factory to form Otsuka Pharmaceutical Co., Ltd. |
| 1969 | Otsuka Pharmaceutical Factory is incorporated as Otsuka Pharmaceutical Factory, Inc. |
| 1973 | Thai Otsuka Pharmaceutical Co., Ltd. is established. Office is established in Pala Alto, U.S. |
| 1974 | Offices are established in Spain and Italy. |
| 1981 | China Otsuka Pharmaceutical Co., Ltd. is established. |
| 1984 | Otsuka Chemical and Medical Products, Inc. is renamed Otsuka Chemical Co., Ltd. |
| 1998 | The Otsuka Museum of Art is opened. |
2001 -
| July 8, 2008 | Otsuka Holdings Co., Ltd. is established. |
|---|---|
| July 8, 2008 | Otsuka Pharmaceutical Co., Ltd. becomes a fully owned subsidiary of Otsuka Holdings Co., Ltd. |
| October 1, 2008 | Otsuka Warehouse Co., Ltd. becomes a fully owned subsidiary of Otsuka Holdings Co., Ltd. |
| October 31, 2008 | Otsuka Pharmaceutical Factory, Inc. becomes a fully owned subsidiary of Otsuka Holdings Co., Ltd. |
| January 1, 2009 | Taiho Pharmaceutical Co., Ltd. becomes a fully owned subsidiary of Otsuka Holdings Co., Ltd. |
| July 1, 2009 | Otsuka Chemical Co., Ltd. becomes a fully owned subsidiary of Otsuka Holdings Co., Ltd. |
| December 15, 2010 | Otsuka Holdings Co., Ltd. is listed on the First Section of the Tokyo Stock Exchange. |
| April 1, 2011 | Otsuka Medical Device Co., Ltd. becomes a fully owned subsidiary of Otsuka Holdings Co., Ltd. |
History of each company
For more details about the history of each company, please refer to individual company websites.
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