Inventor
YOSHINO RYOUZOU
JP10 patents
⚠️ This page may combine multiple inventors who share the name “YOSHINO RYOUZOU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
8 patentsUS6427065B1Jul 30, 2002
Power transmission system, IC card and information communication system using IC card
HITACHI LTD257 citations99
US6321067B1Nov 20, 2001
Power transmission system IC card and information communication system using IC card
HITACHI LTD217 citations99
US6194993B1Feb 27, 2001
Reader and/or writer apparatus, power feeding system, and communication system
HITACHI LTD89 citations97
US6608550B2Aug 19, 2003
Reader and/or writer apparatus, power feeding system, and communication system
HITACHI LTD34 citations92
US6686750B2Feb 3, 2004
Semiconductor integrated circuit device and IC card
HITACHI LTD19 citations91
US6173900B1Jan 16, 2001
IC card
HITACHI LTD31 citations89
US5949823ASep 7, 1999
Data communication system and radio IC card system
HITACHI LTD11 citations74
US6420883B1Jul 16, 2002
Semiconductor integrated circuit device and IC card
HITACHI LTD13 citations72