Akihiko Osawa

Method of production of vertical MOS transistor

Vertical MOS transistor and its production method

Vertical power MOSFET and process of fabricating the same

Semiconductor gate trench with covered open ends

Method of making complete dielectric isolation structure in semiconductor integrated circuit

Method of manufacturing a semiconductor device by forming at least three regions of different lifetimes of carriers at different depths

Dielectrically isolated structure for use in soi-type semiconductor device

Semiconductor device with overvoltage protective function

Semiconductor device and method of increasing device breakdown voltage of semiconductor device

Semiconductor device having vertical metal insulator semiconductor transistors having plural spatially overlapping regions of different conductivity type