Inventor
HANAWA HIROYUKI
JP30 patents
⚠️ This page may combine multiple inventors who share the name “HANAWA HIROYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI KOKI KK
16 patentsUS7521892B2Apr 21, 2009
Cordless power tool with overcurrent protection circuit permitting the overcurrent condition during specified time periods
HITACHI KOKI KK108 citations98
USD562227SFeb 19, 2008
Battery pack
HITACHI KOKI KK64 citations98
US8381829B2Feb 26, 2013
Battery pack and cordless tool using the same
HITACHI KOKI KK38 citations94
US7969116B2Jun 28, 2011
Power pack and cordless power tool having the same
HITACHI KOKI KK37 citations92
USD607814SJan 12, 2010
Battery pack
HITACHI KOKI KK25 citations92
US7446508B2Nov 4, 2008
Battery charger for charging lithium-ion battery
HITACHI KOKI KK27 citations92
US9236588B2Jan 12, 2016
Battery pack and power tool provided with the same
HITACHI KOKI KK11 citations84
US8579042B2Nov 12, 2013
Battery pack and cordless tool using the same
HITACHI KOKI KK8 citations84
US7956575B2Jun 7, 2011
Charging device for battery
HITACHI KOKI KK15 citations84
US10263228B2Apr 16, 2019
Electric device including sealing member between attachment part and battery pack
HITACHI KOKI KK7 citations83
US7807293B2Oct 5, 2010
Battery pack and motor-driven tool using the same
HITACHI KOKI KK8 citations82
US9748534B2Aug 29, 2017
Electric tool and battery pack for the electric tool
HITACHI KOKI KK3 citations70
US8035350B2Oct 11, 2011
Battery charger
HITACHI KOKI KK5 citations63
US7759899B2Jul 20, 2010
Battery pack, and assembly of battery pack and motor-driven tool or charger
HITACHI KOKI KK5 citations62
US7948210B2May 24, 2011
Battery pack and electric tool
HITACHI KOKI KK1 citations52
US11229997B2Jan 25, 2022
Working machine
HITACHI KOKI KK0 citations50
KOKI HOLDINGS CO LTD
11 patentsUS11205820B2Dec 21, 2021
Battery pack, electrical device using battery pack, and electrical device system
KOKI HOLDINGS CO LTD12 citations85
US12125994B2Oct 22, 2024
Electrical apparatus using battery pack
KOKI HOLDINGS CO LTD0 citations62
US12074296B2Aug 27, 2024
Battery pack, electric apparatus using battery pack, and electric apparatus main body
KOKI HOLDINGS CO LTD0 citations62
US12046721B2Jul 23, 2024
Battery pack and electric apparatus using battery pack
KOKI HOLDINGS CO LTD0 citations62
US11837741B2Dec 5, 2023
Electrical apparatus using battery pack
KOKI HOLDINGS CO LTD1 citations62
US11824169B2Nov 21, 2023
Battery pack, electrical device using battery pack, and electrical device system
KOKI HOLDINGS CO LTD1 citations62
US11710860B2Jul 25, 2023
Battery pack and electrical apparatus using battery pack
KOKI HOLDINGS CO LTD1 citations62
US11367907B2Jun 21, 2022
Battery pack and electric apparatus using battery pack
KOKI HOLDINGS CO LTD0 citations62
US12101830B2Sep 24, 2024
Battery pack and electric device system
KOKI HOLDINGS CO LTD0 citations56
US11637433B2Apr 25, 2023
Battery pack and electrical apparatus
KOKI HOLDINGS CO LTD0 citations52
US12224407B2Feb 11, 2025
Battery pack and wireless linking system
KOKI HOLDINGS CO LTD0 citations48