Chugai Pharmaceutical Co., Ltd. engages in the research, development, manufacturing, sale, importation, and exportation of pharmaceuticals. Its operations are carried out through the Domestic and Overseas businesses. The Domestic Business covers the manufacturing, research, and development operations in Japan. The Overseas business comprises of sales and production in Europe, Taiwan and China. The company was founded by Juzo Ueno on March 10, 1925 and is headquartered in Tokyo, Japan.