National Institute of Advanced Industrial Science and Technology
Also he hold adjunct professorships in two universities. He became Professor at Cooperative Graduate School, the University of Tsukuba in 1992 (to 2010), and Professor at the Graduate School of Information Science and Technology, the University of Tokyo in 2001 (to 2007). He retired from National Institute of Advanced Industrial Science and Technology in 2012 and awarded the title of Emeritus Researcher.