Inventor · disambiguated record
Chikai Yoshimizu
Also filed as: YOSHIMIZU CHIKAI
36 granted patents·7 pending applications·1,189 citations·filing 1990–2017
98Inventor score
Top patents by PatentIndex Score
43 records- 0199US7185998B2Power toolHITACHI KOKI KK·Filed 2003·Granted Mar 6, 2007·135 cites·12 claims
- 0299US6679406B2Power toolHITACHI KOKI KK·Filed 2002·Granted Jan 20, 2004·113 cites·12 claims
- 0397US8517558B2Power toolOOMORI KATSUHIRO·Filed 2011·Granted Aug 27, 2013·26 cites·3 claims
- 0497US7934847B2Power tool with light unitHITACHI KOKI KK·Filed 2007·Granted May 3, 2011·48 cites·19 claims
- 0597US7216723B2Pulse torque generator and power tool having the sameHITACHI KOKI KK·Filed 2005·Granted May 15, 2007·29 cites·20 claims
- 0696US7048075B2Power toolHITACHI KOKI KK·Filed 2002·Granted May 23, 2006·56 cites·29 claims
- 0794US7108079B2Electric power toolHITACHI KOKI KK·Filed 2002·Granted Sep 19, 2006·45 cites·12 claims
- 0894US6905052B2Power toolHITACHI KOKI KK·Filed 2003·Granted Jun 14, 2005·45 cites·26 claims
- 0994US6495932B1DC power source unitHITACHI KOKI KK·Filed 2000·Granted Dec 17, 2002·72 cites·7 claims
- 1094US5816121ACordless fastening toolHITACHI KOKI KK·Filed 1997·Granted Oct 6, 1998·103 cites·9 claims
- 1193US9616558B2Impact toolNISHIKAWA TOMOMASA·Filed 2010·Granted Apr 11, 2017·19 cites·7 claims
- 1293US9160211B2Work machine and brushless motorTANIMOTO HIDEYUKI·Filed 2010·Granted Oct 13, 2015·13 cites·15 claims
- 1392US7140451B2Portable tool having cover and label to be stuck on the portable tool for identificationHITACHI KOKI KK·Filed 2003·Granted Nov 28, 2006·61 cites·24 claims
- 1491US10263228B2Electric device including sealing member between attachment part and battery packHITACHI KOKI KK·Filed 2013·Granted Apr 16, 2019·7 cites·7 claims
- 1589US7681661B2Electric power toolHITACHI KOKI KK·Filed 2005·Granted Mar 23, 2010·25 cites·16 claims
- 1687US7665541B2Electric power tool with coverHITACHI KOKI KK·Filed 2008·Granted Feb 23, 2010·15 cites·2 claims
- 1787US7490746B2Power toolHITACHI KOKI KK·Filed 2006·Granted Feb 17, 2009·20 cites·4 claims
- 1887US6172860B1DC power source unit alarming before electrically powered tool is overheated and stopping power supply thereafterHITACHI KOKI KK·Filed 1998·Granted Jan 9, 2001·66 cites·12 claims
- 1984US7455121B2Power toolHITACHI KOKI KK·Filed 2004·Granted Nov 25, 2008·24 cites·5 claims
- 2082US8237404B2Adaptor, assembly of battery pack and adaptor, and electric tool with the sameTAKANO NOBUHIRO·Filed 2007·Granted Aug 7, 2012·21 cites·9 claims
- 2182US7368843B2Commutator motorHITACHI KOKI KK·Filed 2006·Granted May 6, 2008·8 cites·9 claims
- 2282US7344054B2Power toolHITACHI KOKI KK·Filed 2004·Granted Mar 18, 2008·18 cites·20 claims
- 2381USD333767SPortable cordless hammerHITACHI KOKI KK·Filed 1990·Granted Mar 9, 1993·21 cites·1 claims
- 2479US6938531B2Reciprocal-movement power toolHITACHI KOKI KK·Filed 2001·Granted Sep 6, 2005·29 cites·7 claims
- 2578US5974918AScrew driving deviceHITACHI KOKI KK·Filed 1997·Granted Nov 2, 1999·37 cites·5 claims
- 2676US9065155B2Adaptor, assembly of battery pack and adaptor, and electric tool with the sameTAKANO NOBUHIRO·Filed 2012·Granted Jun 23, 2015·5 cites·4 claims
- 2776US7323796B2Motor-driven toolHITACHI KOKI KK·Filed 2003·Granted Jan 29, 2008·17 cites·19 claims
- 2875US8928201B2Electric motor having an output shaft rotatably supported by a housing and working machine including the sameTANIMOTO HIDEYUKI·Filed 2010·Granted Jan 6, 2015·3 cites·12 claims
- 2973US10547182B2Electric operating machineHITACHI KOKI KK·Filed 2017·Granted Jan 28, 2020·2 cites·13 claims
- 3073US7789281B2Electrically driven flywheel-fastener driverHITACHI KOKI KK·Filed 2006·Granted Sep 7, 2010·4 cites·16 claims
- 3173US5931039AElectrical bar cutting and bending toolHITACHI KOKI KK·Filed 1997·Granted Aug 3, 1999·38 cites·28 claims
- 3272US6661148B2Motor-driven toolHITACHI KOKI KK·Filed 2002·Granted Dec 9, 2003·15 cites·16 claims
- 3371US7541773B2Battery-powered tool capable of detecting discharged battery packHITACHI KOKI KK·Filed 2005·Granted Jun 2, 2009·10 cites·13 claims
- 3471US7508109B2Commutator motorHITACHI KOKI KK·Filed 2007·Granted Mar 24, 2009·4 cites·20 claims
- 3570US6026668AElectrically-powered cutting and bending machineHITACHI KOKI KK·Filed 1999·Granted Feb 22, 2000·28 cites·9 claims
- 3661US7064467B2Commutator motorHITACHI KOKI KK·Filed 2003·Granted Jun 20, 2006·7 cites·5 claims
- 3753US2006170395A1Tool storage caseYOSHIMIZU CHIKAI·Filed 2006·Application pending·0 cites
- 3851US2011199756A1Power ToolOOMORI KATSUHIRO·Filed 2011·Application pending·0 cites
- 3949US2007013252A1Commutator motorYOKOTA TOMOYOSHI·Filed 2006·Application pending·0 cites
- 4048US2016207187A1Drilling DeviceHITACHI KOKI KK·Filed 2014·Application pending·0 cites
- 4145US2007056760A1Portable tool having cover and label to be stuck on the portable tool for identificationYOSHIMIZU CHIKAI·Filed 2006·Application pending·0 cites
- 4244US2012139456A1Electric operating machineTAKANO NOBUHIRO·Filed 2010·Application pending·0 cites
- 4344US2011025255A1Solar Power System For Charging Battery PackHITACHI KOKI KK·Filed 2010·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Chikai Yoshimizu files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →