Inventor
UMETSU KOJI
JP34 patents
⚠️ This page may combine multiple inventors who share the name “UMETSU KOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SONY CORP
20 patentsUS5408170AApr 18, 1995
Device for charging a secondary battery having interrupt means to prevent overcharging
SONY CORP92 citations94
US5172044ADec 15, 1992
Multi-rate constant voltage battery charger with display
SONY CORP52 citations93
US6525947B2Feb 25, 2003
Power supply apparatus and power supply system
SONY CORP20 citations92
US5923149AJul 13, 1999
Charging apparatus
SONY CORP40 citations92
US5440220AAug 8, 1995
Battery discharge control circuit
SONY CORP20 citations90
US9669723B2Jun 6, 2017
Power storage device, power system and electric vehicle
SONY CORP17 citations84
US9620968B2Apr 11, 2017
Power reserve apparatus, power system, and electric vehicle
SONY CORP7 citations84
US8035347B2Oct 11, 2011
Battery charger
SONY CORP7 citations84
US7999511B2Aug 16, 2011
Battery charger
SONY CORP11 citations84
US7035121B2Apr 25, 2006
Switching power supply apparatus
SONY CORP13 citations84
US6005371ADec 21, 1999
Charging apparatus
SONY CORP17 citations84
US6229723B1May 8, 2001
Power unit and power supply system with a comparison circuit for a reverse flow preventative diode
SONY CORP18 citations83
US9608451B2Mar 28, 2017
Electric power supplying apparatus, electric power supplying method, inverter, and electric vehicle
SONY CORP9 citations82
US5923150AJul 13, 1999
Charging apparatus
SONY CORP12 citations74
US10523027B2Dec 31, 2019
Power supply apparatus and power supply method
SONY CORP4 citations73
US10020662B2Jul 10, 2018
Electric storage apparatus, electronic device, electric vehicle, and electric power system
SONY CORP2 citations73
US9878634B2Jan 30, 2018
Power reserve apparatus, power system, and electric vehicle
SONY CORP2 citations73
US9728821B2Aug 8, 2017
Power storage apparatus and electric vehicle
SONY CORP4 citations73
US10164298B2Dec 25, 2018
Power storage device, control method, control device, power storage system, maintenance system, electric vehicle, and electronic equipment
SONY CORP2 citations68
US9952287B2Apr 24, 2018
Monitoring apparatus, monitoring control apparatus, power supply apparatus, monitoring method, monitoring control method, power storage system, electronic apparatus, motor-driven vehicle, and electric power system
SONY CORP0 citations52
MURATA MANUFACTURING CO
7 patentsUS10008862B2Jun 26, 2018
Power storage device, power storage system, and control method of power storage device
MURATA MANUFACTURING CO17 citations84
US10069311B2Sep 4, 2018
Power storage device and method of controlling power storage device
MURATA MANUFACTURING CO8 citations82
US10587127B2Mar 10, 2020
Charging device, charging control method, electricity storage device, power storage device, power system, and electric vehicle
MURATA MANUFACTURING CO3 citations72
US10056773B2Aug 21, 2018
Battery control device, control method, control system and electric vehicle
MURATA MANUFACTURING CO2 citations72
US11594903B2Feb 28, 2023
Power storage system and container type power storage system
MURATA MANUFACTURING CO0 citations62
US10916948B2Feb 9, 2021
Power control apparatus and power control method
MURATA MANUFACTURING CO0 citations62
US10361575B2Jul 23, 2019
Power storage module, power storage apparatus, power storage system, control method, electronic apparatus, electric vehicle, and electric power system
MURATA MANUFACTURING CO0 citations52