Description Nihon Unisys is a leading provider of information technology (IT) consulting services in Japan. The company's range of services includes computer and communications systems design, integration, outsourcing, and support services. It also sells network servers and software. Established in 1958, Nihon Unisys serves customers in such industries as education, finance, government, and health care from 13 offices located throughout the country. Mitsui & Co. is the largest shareholder of Nihon Unisys with a nearly 28% stake. In 2007, US-based Unisys Corporation sold the 28% of the company that it owned.