1970s  Became internationally acclaimed graphic designer through his axonometric alphabets

1980   Served as Board of Director of Alliance Graphique Internationale (AGI)

1980s  Started making alphabet sculptures and also advanced into the field of product design

        Collaborated in the foundation of the Faculty of Design at Tama Art University in Japan, 

        and was the first Head of Design Department

1994   Ended his 25 years of design activity and moved to Los Angeles to become a sculptor

2004   Returned to Japan and produced various sculptures and reliefs for public spaces all over the country.

        Resumed his design activity from another view point as an artist

2015   Appointed as emeritus professor of Tama Art University