Inventor · disambiguated record
Hirokatsu Yamamoto
Also filed as: YAMAMOTO HIROKATSU
37 granted patents·15 pending applications·439 citations·filing 2002–2025
97Inventor score
Top patents by PatentIndex Score
52 records- 0198US7007762B2Power toolMAKITA CORP·Filed 2002·Granted Mar 7, 2006·82 cites·4 claims
- 0297US8678106B2Rotary impact toolMATSUNAGA YUTAKA·Filed 2010·Granted Mar 25, 2014·101 cites·7 claims
- 0397US8179069B2Electric power tool, control unit and recording mediumMATSUNAGA YUTAKA·Filed 2008·Granted May 15, 2012·78 cites·11 claims
- 0496US10953532B2Electric power tool configured to detect twisted motionMAKITA CORP·Filed 2017·Granted Mar 23, 2021·18 cites·20 claims
- 0595US10883660B2Electric power tool, and method for detecting kickback of electric power tool from workpieceMAKITA CORP·Filed 2017·Granted Jan 5, 2021·7 cites·15 claims
- 0695US9621081B2Motor- driven apparatus and method for driving the sameMAKITA CORP·Filed 2015·Granted Apr 11, 2017·10 cites·12 claims
- 0794US10780563B2Electric power tool and method of controlling rotational speed of motor in electric power toolMAKITA CORP·Filed 2017·Granted Sep 22, 2020·9 cites·17 claims
- 0893US11865924B2CartMAKITA CORP·Filed 2022·Granted Jan 9, 2024·2 cites·13 claims
- 0990US9737984B2Power toolMAKITA CORP·Filed 2014·Granted Aug 22, 2017·13 cites·17 claims
- 1082US10954947B2Backpack-type blowerMAKITA CORP·Filed 2016·Granted Mar 23, 2021·2 cites·19 claims
- 1182US10913141B2Impact toolMAKITA CORP·Filed 2018·Granted Feb 9, 2021·3 cites·7 claims
- 1281US11230983B2Engine deviceTOYOTA MOTOR CO LTD·Filed 2021·Granted Jan 25, 2022·1 cites·8 claims
- 1381US10486280B2Electric working machine, and method for determining load-imposed state of electric working machineMAKITA CORP·Filed 2018·Granted Nov 26, 2019·3 cites·12 claims
- 1481US9425730B2Apparatus for estimating quantity of state relating to motor, and electric toolSAKO MASAHIKO·Filed 2012·Granted Aug 23, 2016·7 cites·23 claims
- 1580US6819022B2Brushless motor for power toolMAKITA CORP·Filed 2003·Granted Nov 16, 2004·32 cites·15 claims
- 1678US10953524B2Impact fastening toolMAKITA CORP·Filed 2018·Granted Mar 23, 2021·2 cites·14 claims
- 1777US11325228B2Rotary impact toolMAKITA CORP·Filed 2018·Granted May 10, 2022·2 cites·5 claims
- 1876US11248570B2Engine apparatusTOYOTA MOTOR CO LTD·Filed 2021·Granted Feb 15, 2022·1 cites·4 claims
- 1976US11215146B2Engine deviceTOYOTA MOTOR CO LTD·Filed 2021·Granted Jan 4, 2022·1 cites·5 claims
- 2074US6933689B2Power toolsMAKITA CORP·Filed 2003·Granted Aug 23, 2005·32 cites·22 claims
- 2171US2025117019A1Working robotMAKITA CORP·Filed 2024·Application pending·0 cites
- 2271US2025113770A1Working robotMAKITA CORP·Filed 2024·Application pending·0 cites
- 2369US2025024775A1Working robotMAKITA CORP·Filed 2024·Application pending·0 cites
- 2468US8616300B2Power tool having an illuminatorSUZUKI JIRO·Filed 2009·Granted Dec 31, 2013·8 cites·18 claims
- 2564US7053567B2Power toolsMAKITA CORP·Filed 2003·Granted May 30, 2006·21 cites·19 claims
- 2663US2025117023A1Autonomous movement systemMAKITA CORP·Filed 2024·Application pending·0 cites
- 2760US11027867B2Tying machineMAKITA CORP·Filed 2018·Granted Jun 8, 2021·0 cites·18 claims
- 2859US11084157B2Work toolMAKITA CORP·Filed 2019·Granted Aug 10, 2021·0 cites·19 claims
- 2959US2025282406A1CartMAKITA CORP·Filed 2025·Application pending·0 cites
- 3059US2025076885A1Autonomous movement systemMAKITA CORP·Filed 2024·Application pending·0 cites
- 3157US2024082999A1Technique for tightening fasteners with electric power toolMAKITA CORP·Filed 2023·Application pending·0 cites
- 3255US8193753B2Motor controller and electric power tool having the sameMATSUNAGA TAKASHI·Filed 2008·Granted Jun 5, 2012·3 cites·6 claims
- 3352US11607789B2Technique for detecting twisted motion of electric working machineMAKITA CORP·Filed 2020·Granted Mar 21, 2023·0 cites·27 claims
- 3451US11746717B2Engine apparatusTOYOTA MOTOR CO LTD·Filed 2021·Granted Sep 5, 2023·0 cites·6 claims
- 3550US2006113096A1Power toolYAMAMOTO HIROKATSU·Filed 2006·Application pending·0 cites
- 3649US12330510B2CartMAKITA CORP·Filed 2022·Granted Jun 17, 2025·0 cites·6 claims
- 3749US10941720B2Control device for internal-combustion engineTOYOTA MOTOR CO LTD·Filed 2019·Granted Mar 9, 2021·0 cites·7 claims
- 3849US2018099391A1Electric power tool, and method of detecting twisted-motion of main body of electric power tool and detecting load on output shaft of electric power toolMAKITA CORP·Filed 2017·Application pending·0 cites
- 3949US2016151845A1Reciprocating electric power toolMAKITA CORP·Filed 2014·Application pending·0 cites
- 4049US2018099399A1Electric power tool and method of assembling electric power toolMAKITA CORP·Filed 2017·Application pending·0 cites
- 4145US11434837B2Engine deviceTOYOTA MOTOR CO LTD·Filed 2021·Granted Sep 6, 2022·0 cites·7 claims
- 4245US10422146B2Rebar tying deviceMAKITA CORP·Filed 2016·Granted Sep 24, 2019·0 cites·15 claims
- 4345US8264189B2Motor controller and electric power tool having the sameMATSUNAGA TAKASHI·Filed 2008·Granted Sep 11, 2012·1 cites·6 claims
- 4443US11421612B2Engine deviceTOYOTA MOTOR CO LTD·Filed 2021·Granted Aug 23, 2022·0 cites·8 claims
- 4543US2015137721A1Power toolMAKITA CORP·Filed 2014·Application pending·0 cites
- 4642US2016305438A1Fluid apparatusMAKITA CORP·Filed 2016·Application pending·0 cites
- 4742US2018092297A1Working machine and method for determining abnormal state of working machineMAKITA CORP·Filed 2017·Application pending·0 cites
- 4841US11346296B2Engine deviceTOYOTA MOTOR CO LTD·Filed 2021·Granted May 31, 2022·0 cites·8 claims
- 4941US11286869B2Engine deviceTOYOTA MOTOR CO LTD·Filed 2021·Granted Mar 29, 2022·0 cites·5 claims
- 5040US10592151B2Work apparatus, and method of rewriting history information thereofMAKITA CORP·Filed 2016·Granted Mar 17, 2020·0 cites·15 claims
Showing the top 50 of 52 patent records by PatentIndex Score.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →