Inventor
NAKAO Ryohhei
JP21 patents
⚠️ This page may combine multiple inventors who share the name “NAKAO Ryohhei”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
VEHICLE ENERGY JAPAN INC
13 patentsUS11124072B2Sep 21, 2021
Battery control device and electric motor vehicle system
VEHICLE ENERGY JAPAN INC2 citations72
US10955479B2Mar 23, 2021
Battery control device
VEHICLE ENERGY JAPAN INC6 citations72
US10807494B2Oct 20, 2020
Battery management system, battery system and hybrid vehicle control system
VEHICLE ENERGY JAPAN INC2 citations72
US12117499B2Oct 15, 2024
Battery management apparatus, battery management method, and battery energy storage system
VEHICLE ENERGY JAPAN INC2 citations71
US12424673B2Sep 23, 2025
Battery control apparatus and battery system
VEHICLE ENERGY JAPAN INC1 citations63
US11532841B2Dec 20, 2022
Storage battery control device
VEHICLE ENERGY JAPAN INC0 citations62
US11247581B2Feb 15, 2022
Battery control device
VEHICLE ENERGY JAPAN INC0 citations62
US11084385B2Aug 10, 2021
Battery control device, battery system, and vehicle
VEHICLE ENERGY JAPAN INC0 citations62
US10879570B2Dec 29, 2020
Storage battery control device
VEHICLE ENERGY JAPAN INC1 citations62
US12149114B2Nov 19, 2024
Battery control apparatus
VEHICLE ENERGY JAPAN INC1 citations61
US12584971B2Mar 24, 2026
Battery management apparatus, battery management method, and battery energy storage system
VEHICLE ENERGY JAPAN INC0 citations50
US12283667B2Apr 22, 2025
Battery management apparatus, battery management method, and battery energy storage system
VEHICLE ENERGY JAPAN INC0 citations50
US11899070B2Feb 13, 2024
Battery control device
VEHICLE ENERGY JAPAN INC0 citations47
HITACHI AUTOMOTIVE SYSTEMS LTD
8 patentsUS11226376B2Jan 18, 2022
Storage battery control device
HITACHI AUTOMOTIVE SYSTEMS LTD68 citations97
US10818983B2Oct 27, 2020
Battery management device and system, and hybrid vehicle control system for utilizing battery performance while maintaining battery life
HITACHI AUTOMOTIVE SYSTEMS LTD4 citations72
US10680453B2Jun 9, 2020
Battery control device
HITACHI AUTOMOTIVE SYSTEMS LTD2 citations72
US10589732B2Mar 17, 2020
Battery control device and vehicle system
HITACHI AUTOMOTIVE SYSTEMS LTD3 citations72
US10266063B2Apr 23, 2019
Battery controller and vehicle system
HITACHI AUTOMOTIVE SYSTEMS LTD3 citations72
US11515579B2Nov 29, 2022
Cell control device, power system
HITACHI AUTOMOTIVE SYSTEMS LTD0 citations62
US11374425B2Jun 28, 2022
Battery energy storage system, battery management system, and control method for controlling battery temperature
HITACHI AUTOMOTIVE SYSTEMS LTD1 citations61
US11346890B2May 31, 2022
Secondary battery control device
HITACHI AUTOMOTIVE SYSTEMS LTD0 citations50