Inventor
YAMAZAKI NAOKO
JP3 patents
Patents
3 patentsUS6719634B2Apr 13, 2004
IC card, terminal device and service management server
HITACHI LTD163 citations97
US5696916ADec 9, 1997
Information storage and retrieval system and display method therefor
HITACHI LTD157 citations96
US6575835B1Jun 10, 2003
IC card, terminal device and service management server
HITACHI LTD27 citations91