Inventor
KUMAGAI RYUNOSUKE
JP32 patents
⚠️ This page may combine multiple inventors who share the name “KUMAGAI RYUNOSUKE”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MAKITA CORP
21 patentsUS9643300B2May 9, 2017
Impact tool
MAKITA CORP38 citations98
US9630310B2Apr 25, 2017
Electric tool
MAKITA CORP17 citations92
US11192223B2Dec 7, 2021
Tool holding apparatus and power tool, and impact tool
MAKITA CORP5 citations84
US11045926B2Jun 29, 2021
Impact tool
MAKITA CORP4 citations84
US10478950B2Nov 19, 2019
Power tool
MAKITA CORP12 citations84
US10322498B2Jun 18, 2019
Electric power tool
MAKITA CORP13 citations84
US10213912B2Feb 26, 2019
Impact tool
MAKITA CORP11 citations84
US10213907B2Feb 26, 2019
Impact tool
MAKITA CORP9 citations84
US10155304B2Dec 18, 2018
Electric tool
MAKITA CORP8 citations84
US10343268B2Jul 9, 2019
Rotary impact tool
MAKITA CORP8 citations83
US11247323B2Feb 15, 2022
Electric working machine and method of controlling rotational state of motor of electric working machine
MAKITA CORP3 citations73
US10994404B2May 4, 2021
Electric tool
MAKITA CORP1 citations73
US10967496B2Apr 6, 2021
Impact tool
MAKITA CORP2 citations73
US10906163B2Feb 2, 2021
Power tool
MAKITA CORP4 citations73
US9676092B2Jun 13, 2017
Electric power tool
MAKITA CORP2 citations73
US9463565B2Oct 11, 2016
Rechargeable electric tool
MAKITA CORP3 citations73
US12220791B2Feb 11, 2025
Impact tool
MAKITA CORP0 citations62
US12064853B2Aug 20, 2024
Impact tool
MAKITA CORP0 citations62
US11407091B2Aug 9, 2022
Power tool
MAKITA CORP0 citations62
US10821577B2Nov 3, 2020
Power tool
MAKITA CORP1 citations62
US10491148B2Nov 26, 2019
Electric working machine
MAKITA CORP0 citations42
NAGASAKA HIDENORI
5 patentsUS8443913B2May 21, 2013
Hook for electric power tool and rechargeable electric power tool equipped with the hook
NAGASAKA HIDENORI40 citations94
US8827003B2Sep 9, 2014
Impact tool
NAGASAKA HIDENORI20 citations92
US8573322B2Nov 5, 2013
Hook for electric power tools and electric power tool equipped with the hook
NAGASAKA HIDENORI29 citations92
US8733471B2May 27, 2014
Rechargeable electric tool
NAGASAKA HIDENORI10 citations84
US8708063B2Apr 29, 2014
Rechargeable electric tool
NAGASAKA HIDENORI7 citations84