Inventor

SHIGEMI KAZUHIKO

JP2 patents

Patents

2 patents

US7031940B2Apr 18, 2006

Charge collecting system and program for controlling the same

OKI ELECTRIC IND CO LTD22 citations86

US7103571B2Sep 5, 2006

Electronic settlement system using prepaid type electronic money

OKI ELECTRIC IND CO LTD19 citations78