Kyowa Hakko Kirin Co., Ltd. engages in the manufacture and sale of medical and pharmaceutical products. It operates through the Pharmaceuticals and Bio-Chemicals segments. The Pharmaceuticals segment deals with the research, development, production, and sale of in vitro diagnostic reagents and ethical drugs concerning renal anemia, leukemia, cancer, allergies, and hypertension. The Bio-Chemicals segment produces and sells medical and industrial raw materials such as amino acids, nucleic acid-related compounds, and healthcare products. The company was founded by Benzaburo Kato on July 1, 1949 and is headquartered in Tokyo, Japan.