Inventor · disambiguated record
Ryunosuke Kumagai
Also filed as: KUMAGAI RYUNOSUKE
32 granted patents·9 pending applications·427 citations·filing 2010–2025
97Inventor score
Top patents by PatentIndex Score
41 records- 0198US9643300B2Impact toolMAKITA CORP·Filed 2013·Granted May 9, 2017·38 cites·20 claims
- 0297US10478950B2Power toolMAKITA CORP·Filed 2016·Granted Nov 19, 2019·12 cites·11 claims
- 0397US10213907B2Impact toolMAKITA CORP·Filed 2017·Granted Feb 26, 2019·9 cites·20 claims
- 0497US8490732B2Electric wheeled apparatus powered by battery packsSUGIMOTO MANABU·Filed 2011·Granted Jul 23, 2013·54 cites·6 claims
- 0596US10322498B2Electric power toolMAKITA CORP·Filed 2015·Granted Jun 18, 2019·13 cites·17 claims
- 0695US9630310B2Electric toolMAKITA CORP·Filed 2015·Granted Apr 25, 2017·17 cites·22 claims
- 0794US8827003B2Impact toolNAGASAKA HIDENORI·Filed 2011·Granted Sep 9, 2014·20 cites·15 claims
- 0894US8443913B2Hook for electric power tool and rechargeable electric power tool equipped with the hookNAGASAKA HIDENORI·Filed 2010·Granted May 21, 2013·40 cites·21 claims
- 0993US11192223B2Tool holding apparatus and power tool, and impact toolMAKITA CORP·Filed 2017·Granted Dec 7, 2021·5 cites·19 claims
- 1093US11045926B2Impact toolMAKITA CORP·Filed 2019·Granted Jun 29, 2021·4 cites·12 claims
- 1193US8733471B2Rechargeable electric toolNAGASAKA HIDENORI·Filed 2011·Granted May 27, 2014·10 cites·13 claims
- 1293US8573322B2Hook for electric power tools and electric power tool equipped with the hookNAGASAKA HIDENORI·Filed 2010·Granted Nov 5, 2013·29 cites·10 claims
- 1392US10155304B2Electric toolMAKITA CORP·Filed 2017·Granted Dec 18, 2018·8 cites·17 claims
- 1491USD679160SPortable electric driverOKUDA SHINSUKE·Filed 2011·Granted Apr 2, 2013·51 cites·1 claims
- 1589US8952581B2Electric toolsNAITO AKIRA·Filed 2012·Granted Feb 10, 2015·14 cites·19 claims
- 1688US10213912B2Impact toolMAKITA CORP·Filed 2014·Granted Feb 26, 2019·11 cites·16 claims
- 1788USD677137SPortable electric driverKAWASE TOMONORI·Filed 2012·Granted Mar 5, 2013·37 cites·1 claims
- 1886US12220791B2Impact toolMAKITA CORP·Filed 2024·Granted Feb 11, 2025·0 cites·7 claims
- 1986US10906163B2Power toolMAKITA CORP·Filed 2019·Granted Feb 2, 2021·4 cites·21 claims
- 2084US2024359298A1Power tool having a manually-movable sleeve for retaining a bitMAKITA CORP·Filed 2024·Application pending·0 cites
- 2183US10343268B2Rotary impact toolMAKITA CORP·Filed 2013·Granted Jul 9, 2019·8 cites·17 claims
- 2282US10967496B2Impact toolMAKITA CORP·Filed 2019·Granted Apr 6, 2021·2 cites·17 claims
- 2381US8607893B2Impact tool with a protecting coverKUMAGAI RYUNOSUKE·Filed 2011·Granted Dec 17, 2013·14 cites·14 claims
- 2480US11247323B2Electric working machine and method of controlling rotational state of motor of electric working machineMAKITA CORP·Filed 2018·Granted Feb 15, 2022·3 cites·5 claims
- 2578US9016397B2Electric power tool suspending attachment and electric power tool equipped with the sameKUROYANAGI TAKAO·Filed 2011·Granted Apr 28, 2015·10 cites·13 claims
- 2678US8708063B2Rechargeable electric toolNAGASAKA HIDENORI·Filed 2011·Granted Apr 29, 2014·7 cites·15 claims
- 2778US2025144773A1Impact toolMAKITA CORP·Filed 2025·Application pending·0 cites
- 2875US12064853B2Impact toolMAKITA CORP·Filed 2021·Granted Aug 20, 2024·0 cites·26 claims
- 2974US2021276164A1Impact toolMAKITA CORP·Filed 2021·Application pending·0 cites
- 3072US10821577B2Power toolMAKITA CORP·Filed 2018·Granted Nov 3, 2020·1 cites·20 claims
- 3171US10994404B2Electric toolMAKITA CORP·Filed 2018·Granted May 4, 2021·1 cites·15 claims
- 3268US9463565B2Rechargeable electric toolMAKITA CORP·Filed 2014·Granted Oct 11, 2016·3 cites·6 claims
- 3367US11407091B2Power toolMAKITA CORP·Filed 2020·Granted Aug 9, 2022·0 cites·25 claims
- 3462US9676092B2Electric power toolMAKITA CORP·Filed 2012·Granted Jun 13, 2017·2 cites·14 claims
- 3549US10491148B2Electric working machineMAKITA CORP·Filed 2016·Granted Nov 26, 2019·0 cites·14 claims
- 3648US2014091648A1Electric power toolMAKITA CORP·Filed 2013·Application pending·0 cites
- 3748US2015135907A1Power toolMAKITA CORP·Filed 2013·Application pending·0 cites
- 3848US2015158157A1Electric power toolMAKITA CORP·Filed 2013·Application pending·0 cites
- 3943US2013180368A1Falling prevention structure for socket in electric power toolKUMAGAI RYUNOSUKE·Filed 2012·Application pending·0 cites
- 4040US2012000755A1Electric toolKUMAGAI RYUNOSUKE·Filed 2010·Application pending·0 cites
- 4138US2012292865A1Falling prevention structure for socket of power toolSUGIMOTO MANABU·Filed 2011·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →