Sigma Corporation has announced that its founder and CEO, Michihiro Yamaki, age 78, has passed away:
Announcement of the death of Michihiro Yamaki, CEO
We regret to announce that the founder and CEO of Sigma Corporation, Michihiro Yamaki passed away at 1:53am on January 18th, 2012.
We would like to sincerely express our deep gratitude for your generous support for him till this day.