Inventor · disambiguated record
Shinki Ohtsu
Also filed as: OHTSU SHINKI
40 granted patents·4 pending applications·1,084 citations·filing 1987–2010
98Inventor score
Files withHITACHI KOKI KK34MURAKAMI TAKUHIRO3NISHIKAWA TOMOMASA2YASUTOMI TOSHINORI2HARADA TETSUHIRO1
Top patents by PatentIndex Score
44 records- 0198US4936394AVibroisolating handle joint structure for power toolHITACHI KOKI KK·Filed 1989·Granted Jun 26, 1990·87 cites·14 claims
- 0297US7216723B2Pulse torque generator and power tool having the sameHITACHI KOKI KK·Filed 2005·Granted May 15, 2007·29 cites·20 claims
- 0396US7048075B2Power toolHITACHI KOKI KK·Filed 2002·Granted May 23, 2006·56 cites·29 claims
- 0496US4913331AInternal-combustion piston driving apparatus having a decompression channelHITACHI KOKI KK·Filed 1988·Granted Apr 3, 1990·119 cites·8 claims
- 0595US4773581ACombustion gas powered toolHITACHI KOKI KK·Filed 1987·Granted Sep 27, 1988·117 cites·6 claims
- 0694US7213659B2Impact drillHITACHI KOKI KK·Filed 2005·Granted May 8, 2007·36 cites·11 claims
- 0794US5052500AVibroisolating handle joint structure for power toolHITACHI KOKI KK·Filed 1990·Granted Oct 1, 1991·79 cites·11 claims
- 0893US7766096B2Electrical power toolHITACHI KOKI KK·Filed 2007·Granted Aug 3, 2010·34 cites·19 claims
- 0993US7073605B2Impact drillHITACHI KOKI KK·Filed 2005·Granted Jul 11, 2006·33 cites·15 claims
- 1088US8925645B2Oil pulse toolHARADA TETSUHIRO·Filed 2009·Granted Jan 6, 2015·23 cites·5 claims
- 1188US7416031B2Impact toolHITACHI KOKI KK·Filed 2006·Granted Aug 26, 2008·30 cites·5 claims
- 1288US5199626ACombustion gas powered toolHITACHI KOKI KK·Filed 1992·Granted Apr 6, 1993·64 cites·5 claims
- 1386US5090606ACombustion gas powered fastener driving toolHITACHI KOKI KK·Filed 1990·Granted Feb 25, 1992·60 cites·17 claims
- 1484US7455121B2Power toolHITACHI KOKI KK·Filed 2004·Granted Nov 25, 2008·24 cites·5 claims
- 1584US6338708B1Centrifuge with a suspension for locating the drive in an axial directionHITACHI KOKI KK·Filed 2000·Granted Jan 15, 2002·29 cites·9 claims
- 1681US7721818B2Power tool having a vibration isolating handleHITACHI KOKI KK·Filed 2005·Granted May 25, 2010·21 cites·16 claims
- 1781US6132354AAutomatic ball balancer for rotating machineHITACHI KOKI KK·Filed 1997·Granted Oct 17, 2000·57 cites·10 claims
- 1876US7323796B2Motor-driven toolHITACHI KOKI KK·Filed 2003·Granted Jan 29, 2008·17 cites·19 claims
- 1975US7171997B2Portable electric router having radial fanHITACHI KOKI KK·Filed 2004·Granted Feb 6, 2007·17 cites·20 claims
- 2074US8205777B2Fuel, gas, combustion type power tool driven by the fuel gas, and compressed gas container for the combustion type power toolNISHIKAWA TOMOMASA·Filed 2005·Granted Jun 26, 2012·13 cites·14 claims
- 2173US7789281B2Electrically driven flywheel-fastener driverHITACHI KOKI KK·Filed 2006·Granted Sep 7, 2010·4 cites·16 claims
- 2272US6661148B2Motor-driven toolHITACHI KOKI KK·Filed 2002·Granted Dec 9, 2003·15 cites·16 claims
- 2370US7121442B2Combustion-type power toolHITACHI KOKI KK·Filed 2005·Granted Oct 17, 2006·9 cites·12 claims
- 2468US7883456B2Centrifugal machine having a vibration preventing mechanismHITACHI KOKI KK·Filed 2007·Granted Feb 8, 2011·3 cites·15 claims
- 2565US7500587B2Combustion-type power toolHITACHI KOKI KK·Filed 2006·Granted Mar 10, 2009·6 cites·14 claims
- 2664US7194988B2Combustion-type power toolHITACHI KOKI KK·Filed 2005·Granted Mar 27, 2007·7 cites·8 claims
- 2763US8499730B2Two cycle engine and two cycle engine toolYASUTOMI TOSHINORI·Filed 2009·Granted Aug 6, 2013·4 cites·9 claims
- 2863US8371034B2Dust collection cover attachable to cutterHITACHI KOKI KK·Filed 2006·Granted Feb 12, 2013·3 cites·10 claims
- 2963US7044090B2Combustion type power tool facilitating cleaning to internal cleaning targetHITACHI KOKI KK·Filed 2004·Granted May 16, 2006·13 cites·14 claims
- 3063US6779612B2Power tool having air discharge windowsHITACHI KOKI KK·Filed 2002·Granted Aug 24, 2004·11 cites·16 claims
- 3162US6951194B2Combustion type power toolHITACHI KOKI KK·Filed 2004·Granted Oct 4, 2005·14 cites·3 claims
- 3262US6695195B2Combustion-powered nail gunHITACHI KOKI KK·Filed 2003·Granted Feb 24, 2004·14 cites·6 claims
- 3361US8439005B2Two cycle engine and toolYASUTOMI TOSHINORI·Filed 2009·Granted May 14, 2013·4 cites·4 claims
- 3461US7261071B2Combustion type power tool facilitating cleaning to internal cleaning targetHITACHI KOKI KK·Filed 2006·Granted Aug 28, 2007·4 cites·4 claims
- 3559US7305940B2Combustion-type power tool having ignition proof arrangementHITACHI KOKI KK·Filed 2006·Granted Dec 11, 2007·4 cites·27 claims
- 3657US7658238B2Impact drillHITACHI KOKI KK·Filed 2004·Granted Feb 9, 2010·12 cites·9 claims
- 3756US8672049B2Vibration drill unitTOKAIRIN JUNICHI·Filed 2006·Granted Mar 18, 2014·5 cites·14 claims
- 3853US8926024B2Motorized cutter, motorized cutter with wheels, and cutting methodSHIMA YUKIHIRO·Filed 2010·Granted Jan 6, 2015·1 cites·15 claims
- 3948US7093670B2Impact drillHITACHI KOKI KK·Filed 2004·Granted Aug 22, 2006·6 cites·16 claims
- 4045US7293541B2Combustion-type power tool having ignition proof arrangementHITACHI KOKI KK·Filed 2006·Granted Nov 13, 2007·0 cites·21 claims
- 4143US2007179328A1Impact toolMURAKAMI TAKUHIRO·Filed 2007·Application pending·0 cites
- 4241US2006254786A1Impact toolMURAKAMI TAKUHIRO·Filed 2006·Application pending·0 cites
- 4339US2007034398A1Impact toolMURAKAMI TAKUHIRO·Filed 2006·Application pending·0 cites
- 4437US2006042574A1Combustion-type power tool providing specific spark energyNISHIKAWA TOMOMASA·Filed 2005·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Shinki Ohtsu 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 →