Inventor
KISHIMA YUJI
JP12 patents
⚠️ This page may combine multiple inventors who share the name “KISHIMA YUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI KOKI KK
5 patentsUSD800650SOct 24, 2017
Battery pack
HITACHI KOKI KK63 citations97
USD699672SFeb 18, 2014
Rechargeable battery
HITACHI KOKI KK78 citations96
US9917452B2Mar 13, 2018
Battery charger capable of efficiently cooling secondary battery in battery pack and charging circuit unit in battery charger
HITACHI KOKI KK10 citations83
US9561548B2Feb 7, 2017
Electric tool
HITACHI KOKI KK3 citations72
US9496536B2Nov 15, 2016
Backpack-type power supply
HITACHI KOKI KK2 citations60
KOKI HOLDINGS CO LTD
5 patentsUS11211868B2Dec 28, 2021
DC power supply device
KOKI HOLDINGS CO LTD1 citations60
US11626807B2Apr 11, 2023
DC power supply device
KOKI HOLDINGS CO LTD0 citations51
US11979039B2May 7, 2024
Charging device having two charging modes
KOKI HOLDINGS CO LTD0 citations50
US11490543B2Nov 1, 2022
DC power supply device
KOKI HOLDINGS CO LTD0 citations50
US12405047B2Sep 2, 2025
Electric device
KOKI HOLDINGS CO LTD0 citations48