|November 1964||“Ohara Pharmaceutical Co., Ltd.” was established.|
|August 2001||Strategic capital alliance signed with Itochu Chemical Frontier Corporation, Inabata & Co., Ltd. and CBC Co., Ltd.|
|February 2007||Obtained all stocks for Sankyo Yell Pharmaceutical Co., Ltd. From Sankyo Co., Ltd., jointly with the group companies|
|October 2007||Tokyo Head Office was established at St. Luke’s Tower|
|June 2008||Transferred head office functions to Shiga Research Park
Introduction of resources from Toho Pharmaceutical Co., Ltd.
|December 2015||Antineoplastic Enzyme Preparation “Crisantaspase”
Submission of a Japan New Drug Application for the Treatment of Diseases
including Acute Lymphoblastic Leukemia and Malignant Lymphoma.