Inventor

YONEZAWA KEI

JP10 patents

⚠️ This page may combine multiple inventors who share the name “YONEZAWA KEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HITACHI LTD

4 patents

US6679423B2Jan 20, 2004

Electronic-money rewarding system for lost and found IC card

HITACHI LTD19 citations91

US6273334B1Aug 14, 2001

Electronic-money rewarding system for lost and found IC card

HITACHI LTD16 citations91

US5932859AAug 3, 1999

Electronic-money rewarding system for lost and found IC card

HITACHI LTD29 citations91

US7525437B2Apr 28, 2009

Wireless signal receiver

HITACHI LTD9 citations82

SONY CORP

2 patents

US7157188B2Jan 2, 2007

Battery

SONY CORP7 citations73

US7442469B2Oct 28, 2008

Cathode active material and non-aqueous electrolyte secondary battery

SONY CORP0 citations39

YONEZAWA KEI

2 patents

US9997803B2Jun 12, 2018

Electrolyte and battery using the same

YONEZAWA KEI3 citations67

US9450244B2Sep 20, 2016

Cathode active material with zirconium in crystal grain boundary of lithium cobalt complex oxide

YONEZAWA KEI0 citations36

KAWAI SHOJI

1 patent

US9168841B2Oct 27, 2015

Method of receiving charge, method of controlling charge, charge control unit and charging equipment

KAWAI SHOJI41 citations87

ISHIMATSU TAKAHISA

1 patent

US8197968B2Jun 12, 2012

Cathode active material and battery

ISHIMATSU TAKAHISA0 citations31