- 1989 Engaged with NEC C&C Research Labs to study on numerical algorithms/softwares for Super Computer SX.
- 1993-96 NEC C&C Research Labs in Europe (Sankt Augustin)
- 2000-2006 Fully worked Japanese National Project to develop a new Power device.
- Found Three Wells and start developing softwares.
- 1999-2001 Japan SIAM Journal editor
- 1994 Provided Open Souce Library : Library for Electro Magnetics (LEM) (Scattport, LAACG)