Inventor · disambiguated record
Kazuhiko Funabashi
Also filed as: FUNABASHI KAZUHIKO
66 granted patents·28 pending applications·882 citations·filing 1998–2023
99Inventor score
Top patents by PatentIndex Score
94 records- 0198US7521892B2Cordless power tool with overcurrent protection circuit permitting the overcurrent condition during specified time periodsHITACHI KOKI KK·Filed 2006·Granted Apr 21, 2009·108 cites·17 claims
- 0297US7677752B2Power tool equipped with lightHITACHI KOKI KK·Filed 2007·Granted Mar 16, 2010·53 cites·23 claims
- 0396US7446508B2Battery charger for charging lithium-ion batteryHITACHI KOKI KK·Filed 2006·Granted Nov 4, 2008·27 cites·29 claims
- 0494US6495932B1DC power source unitHITACHI KOKI KK·Filed 2000·Granted Dec 17, 2002·72 cites·7 claims
- 0593US9160211B2Work machine and brushless motorTANIMOTO HIDEYUKI·Filed 2010·Granted Oct 13, 2015·13 cites·15 claims
- 0692US11205820B2Battery pack, electrical device using battery pack, and electrical device systemKOKI HOLDINGS CO LTD·Filed 2017·Granted Dec 21, 2021·12 cites·24 claims
- 0792US9496809B2Electric working machineHITACHI KOKI KK·Filed 2013·Granted Nov 15, 2016·12 cites·9 claims
- 0892US7932697B2Power toolHITACHI KOKI KK·Filed 2010·Granted Apr 26, 2011·6 cites·5 claims
- 0991US10630223B2Power toolKOKI HOLDINGS CO LTD·Filed 2016·Granted Apr 21, 2020·8 cites·10 claims
- 1091US9955627B2Electric working machineHITACHI KOKI KK·Filed 2013·Granted May 1, 2018·24 cites·15 claims
- 1191US9337763B2Power tool system and power supply deviceFUNABASHI KAZUHIKO·Filed 2011·Granted May 10, 2016·24 cites·24 claims
- 1291US8381829B2Battery pack and cordless tool using the sameHITACHI KOKI KK·Filed 2007·Granted Feb 26, 2013·38 cites·15 claims
- 1391US7969116B2Power pack and cordless power tool having the sameHITACHI KOKI KK·Filed 2006·Granted Jun 28, 2011·37 cites·41 claims
- 1490US10967491B2DriverKOKI HOLDINGS CO LTD·Filed 2017·Granted Apr 6, 2021·11 cites·20 claims
- 1589US7932701B2Power toolHITACHI KOKI KK·Filed 2010·Granted Apr 26, 2011·4 cites·7 claims
- 1688US8198835B2Cordless power tool and battery device used for sameYOKOYAMA KOUSEI·Filed 2007·Granted Jun 12, 2012·46 cites·8 claims
- 1788US6566843B2DC power source unit with battery charging functionHITACHI KOKI KK·Filed 2002·Granted May 20, 2003·81 cites·17 claims
- 1887US12074296B2Battery pack, electric apparatus using battery pack, and electric apparatus main bodyKOKI HOLDINGS CO LTD·Filed 2023·Granted Aug 27, 2024·0 cites·21 claims
- 1987US6172860B1DC 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
- 2086US10307841B2Power toolHITACHI KOKI KK·Filed 2016·Granted Jun 4, 2019·3 cites·19 claims
- 2185US8579042B2Battery pack and cordless tool using the sameHITACHI KOKI KK·Filed 2013·Granted Nov 12, 2013·8 cites·13 claims
- 2282US12046721B2Battery pack and electric apparatus using battery packKOKI HOLDINGS CO LTD·Filed 2022·Granted Jul 23, 2024·0 cites·22 claims
- 2382US11824169B2Battery pack, electrical device using battery pack, and electrical device systemKOKI HOLDINGS CO LTD·Filed 2017·Granted Nov 21, 2023·1 cites·19 claims
- 2482US8237404B2Adaptor, assembly of battery pack and adaptor, and electric tool with the sameTAKANO NOBUHIRO·Filed 2007·Granted Aug 7, 2012·21 cites·9 claims
- 2582US2024055674A1Battery pack, electric device using battery pack, and electric device systemKOKI HOLDINGS CO LTD·Filed 2023·Application pending·0 cites
- 2681US10886764B2Power toolHITACHI KOKI KK·Filed 2015·Granted Jan 5, 2021·4 cites·5 claims
- 2780US8988019B2Electric operating machineFUNABASHI KAZUHIKO·Filed 2011·Granted Mar 24, 2015·7 cites·5 claims
- 2879US11837741B2Electrical apparatus using battery packKOKI HOLDINGS CO LTD·Filed 2018·Granted Dec 5, 2023·1 cites·14 claims
- 2978US7592780B2Battery charging apparatusHITACHI KOKI KK·Filed 2005·Granted Sep 22, 2009·16 cites·12 claims
- 3076US10199844B2Power-supplying deviceHITACHI KOKI KK·Filed 2013·Granted Feb 5, 2019·5 cites·20 claims
- 3176US9345156B2Power supply deviceOGURA MASAYUKI·Filed 2012·Granted May 17, 2016·8 cites·6 claims
- 3276US9065155B2Adaptor, assembly of battery pack and adaptor, and electric tool with the sameTAKANO NOBUHIRO·Filed 2012·Granted Jun 23, 2015·5 cites·4 claims
- 3375US8928201B2Electric 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
- 3475US7579807B2Battery chargerHITACHI KOKI KK·Filed 2006·Granted Aug 25, 2009·13 cites·21 claims
- 3574US10551442B2Battery diagnosis device and battery packHITACHI KOKI KK·Filed 2016·Granted Feb 4, 2020·2 cites·9 claims
- 3674US8497662B2Charging deviceARADACHI TAKAO·Filed 2008·Granted Jul 30, 2013·12 cites·11 claims
- 3774US8183836B2Lithium battery packFUNABASHI KAZUHIKO·Filed 2010·Granted May 22, 2012·4 cites·24 claims
- 3873US12125994B2Electrical apparatus using battery packKOKI HOLDINGS CO LTD·Filed 2023·Granted Oct 22, 2024·0 cites·8 claims
- 3973US10744633B2Power ToolHITACHI KOKI KK·Filed 2016·Granted Aug 18, 2020·2 cites·10 claims
- 4073US10547182B2Electric operating machineHITACHI KOKI KK·Filed 2017·Granted Jan 28, 2020·2 cites·13 claims
- 4173US8231992B2Lithium battery packFUNABASHI KAZUHIKO·Filed 2006·Granted Jul 31, 2012·2 cites·2 claims
- 4272US11367907B2Battery pack and electric apparatus using battery packKOKI HOLDINGS CO LTD·Filed 2018·Granted Jun 21, 2022·0 cites·16 claims
- 4371US7541773B2Battery-powered tool capable of detecting discharged battery packHITACHI KOKI KK·Filed 2005·Granted Jun 2, 2009·10 cites·13 claims
- 4470US11710860B2Battery pack and electrical apparatus using battery packKOKI HOLDINGS CO LTD·Filed 2018·Granted Jul 25, 2023·1 cites·20 claims
- 4569US10205198B2Power tool and battery packHITACHI KOKI KK·Filed 2015·Granted Feb 12, 2019·2 cites·12 claims
- 4669US6992464B2Battery charger capable of indicating time remaining to achieve full chargeHITACHI KOKI KK·Filed 2003·Granted Jan 31, 2006·23 cites·14 claims
- 4768US7800343B2Battery charger with battery life judging functionHITACHI KOKI KK·Filed 2006·Granted Sep 21, 2010·5 cites·6 claims
- 4866US8093859B2Charging system for charging battery packARADACHI TAKAO·Filed 2009·Granted Jan 10, 2012·7 cites·4 claims
- 4966US7439708B2Battery charger with control of two power supply circuitsHITACHI KOKI KK·Filed 2005·Granted Oct 21, 2008·7 cites·7 claims
- 5065US7723960B2Lithium battery packHITACHI KOKI KK·Filed 2007·Granted May 25, 2010·5 cites·14 claims
Showing the top 50 of 94 patent records by PatentIndex Score.
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