04/1974-09/1982 Research Assistant of Tohoku University; Development of films of compound superconductors.

10/1982-03/1990 Assistant Professor of Tohoku University; Development of superconductor films and quantum device.

04/1990-03/2012 Professor of Utsunomiya University; Discovery of intrinsic Josephson effect of high-temperature superconductor, and its development into high frequency devices over the range of GHz to THz.04/2012 Retired, since then Emeritus Professor of Utsunomiya University

Additional Information

10/1976-12/1977 Research Scholar of Alexander von Humboldt Foundation, at Institute for Applied Physics, Giessen University, Giessen, Germany; for "Humboldt Research Fellowship Programme" under Professor Dr. Eugen Saur.

2018 Recipience of IEEE Senior Member.