Inventor · disambiguated record
Haruhisa Fujisawa
Also filed as: FUJISAWA HARUHISA
30 granted patents·15 pending applications·1,178 citations·filing 2004–2019
97Inventor score
Top patents by PatentIndex Score
45 records- 0198US6886730B2Combustion-powered driving toolHITACHI KOKI KK·Filed 2004·Granted May 3, 2005·904 cites·14 claims
- 0294US9236588B2Battery pack and power tool provided with the sameHITACHI KOKI KK·Filed 2014·Granted Jan 12, 2016·11 cites·5 claims
- 0391US9337763B2Power tool system and power supply deviceFUNABASHI KAZUHIKO·Filed 2011·Granted May 10, 2016·24 cites·24 claims
- 0490US7063052B2Combustion type power tool having fin in low turbulent combustion region within combustion chamberHITACHI KOKI KK·Filed 2005·Granted Jun 20, 2006·28 cites·11 claims
- 0589USD575224SBattery packHITACHI KOKI KK·Filed 2007·Granted Aug 19, 2008·40 cites·1 claims
- 0683US7932694B2Battery charger operable for selective one of a plurality of power suppliesHITACHI KOKI KK·Filed 2008·Granted Apr 26, 2011·20 cites·21 claims
- 0782US8765280B2Battery pack and battery-driven power tool using the sameUEDA TAKASHI·Filed 2008·Granted Jul 1, 2014·6 cites·40 claims
- 0882US7021251B2Combustion type power tool having avoiding unit for avoiding overheating to mechanical components in the toolHITACHI KOKI KK·Filed 2004·Granted Apr 4, 2006·36 cites·20 claims
- 0980US7467739B2Combustion-powered, fastener-driving tool generating sparks in succession when triggeredHITACHI KOKI KK·Filed 2005·Granted Dec 23, 2008·11 cites·14 claims
- 1077US7225768B2Combustion type power tool having buffer pieceHITACHI KOKI KK·Filed 2005·Granted Jun 5, 2007·8 cites·21 claims
- 1176US9345156B2Power supply deviceOGURA MASAYUKI·Filed 2012·Granted May 17, 2016·8 cites·6 claims
- 1275US7073468B2Combustion type power tool having motor suspension arrangementHITACHI KOKI KK·Filed 2005·Granted Jul 11, 2006·12 cites·24 claims
- 1373US8895182B2Battery pack and power tool provided with the sameHANAWA HIROYUKI·Filed 2008·Granted Nov 25, 2014·2 cites·21 claims
- 1470US7121442B2Combustion-type power toolHITACHI KOKI KK·Filed 2005·Granted Oct 17, 2006·9 cites·12 claims
- 1568US7743955B2Combustion type power tool having fanHITACHI KOKI KK·Filed 2005·Granted Jun 29, 2010·10 cites·5 claims
- 1668US7210431B2Combustion-type power tool with exhaust gas flow regulating ribHITACHI KOKI KK·Filed 2005·Granted May 1, 2007·6 cites·15 claims
- 1767US9496536B2Backpack-type power supplyHITACHI KOKI KK·Filed 2013·Granted Nov 15, 2016·2 cites·18 claims
- 1867US9391305B2Backpack-type power supply including operation portionHITACHI KOKI KK·Filed 2013·Granted Jul 12, 2016·4 cites·11 claims
- 1966US7387092B2Combustion-type power tool having cooling arrangementHITACHI KOKI KK·Filed 2007·Granted Jun 17, 2008·7 cites·7 claims
- 2066US7316209B2Combustion type power tool having buffer pieceHITACHI KOKI KK·Filed 2007·Granted Jan 8, 2008·4 cites·13 claims
- 2165US7500587B2Combustion-type power toolHITACHI KOKI KK·Filed 2006·Granted Mar 10, 2009·6 cites·14 claims
- 2261US7484481B2Combustion-type power tool having switch protection arrangementHITACHI KOKI KK·Filed 2006·Granted Feb 3, 2009·3 cites·13 claims
- 2359US7305940B2Combustion-type power tool having ignition proof arrangementHITACHI KOKI KK·Filed 2006·Granted Dec 11, 2007·4 cites·27 claims
- 2457US7455036B2Combustion type power tool having fin in low turbulent combustion region within combustion chamberHITACHI KOKI KK·Filed 2006·Granted Nov 25, 2008·3 cites·6 claims
- 2557US2015194646A1Backpack-Type Power SupplyHITACHI KOKI KK·Filed 2013·Application pending·0 cites
- 2655US7305941B2Combustion type power tool having motor suspension arrangementHITACHI KOKI KK·Filed 2006·Granted Dec 11, 2007·2 cites·5 claims
- 2755US7237515B2Combustion-type power tool having cooling arrangementHITACHI KOKI KK·Filed 2005·Granted Jul 3, 2007·2 cites·12 claims
- 2853US11626807B2DC power supply deviceKOKI HOLDINGS CO LTD·Filed 2019·Granted Apr 11, 2023·0 cites·17 claims
- 2953US7131404B2Combustion-type power tool having gas canister cooling arrangementHITACHI KOKI KK·Filed 2005·Granted Nov 7, 2006·2 cites·6 claims
- 3051US2015228940A1Backpack-Type Power SupplyHITACHI KOKI KK·Filed 2013·Application pending·0 cites
- 3149US2015194647A1Backpack-Type Power SupplyHITACHI KOKI KK·Filed 2013·Application pending·0 cites
- 3247US2008223895A1Combustion-powered tool with improved ignition starting featureHITACHI KOKI KK·Filed 2008·Application pending·0 cites
- 3345US7293541B2Combustion-type power tool having ignition proof arrangementHITACHI KOKI KK·Filed 2006·Granted Nov 13, 2007·0 cites·21 claims
- 3445US2015188332A1Backpack-Type Power SupplyHITACHI KOKI KK·Filed 2013·Application pending·0 cites
- 3545US2009085514A1Battery chargerHITACHI KOKI KK·Filed 2008·Application pending·0 cites
- 3644US2008231229A1Charging DeviceARADACHI TAKAO·Filed 2008·Application pending·0 cites
- 3744US2009051313A1Battery ChargerYOSHIMURA KAZUNOBU·Filed 2008·Application pending·0 cites
- 3844US2011031975A1Battery-Driven Power Tool and Battery Pack ThereforHITACHI KOKI KK·Filed 2010·Application pending·0 cites
- 3942USD689432SRechargeable batteryHITACHI KOKI KK·Filed 2013·Granted Sep 10, 2013·4 cites·1 claims
- 4042US2013051104A1Battery Adapter and Power Source Device Employing SameNAKANO YASUSHI·Filed 2012·Application pending·0 cites
- 4142US2008308593A1Combustion type power toolAKIBA YOSHITAKA·Filed 2008·Application pending·0 cites
- 4241US2013285476A1Power supply device, inverter device, power toolNAKANO YASUSHI·Filed 2012·Application pending·0 cites
- 4341US2014001853A1Charger and power supply systemHANAWA HIROYUKI·Filed 2012·Application pending·0 cites
- 4437US2006042574A1Combustion-type power tool providing specific spark energyNISHIKAWA TOMOMASA·Filed 2005·Application pending·0 cites
- 4532US2017331082A1Electric deviceHITACHI KOKI KK·Filed 2015·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →