Inventor · disambiguated record
Tadaharu Yokota
Also filed as: YOKOTA TADAHARU
22 granted patents·4 pending applications·303 citations·filing 1991–2022
96Inventor score
Files withHITACHI LTD13UNISIA JECS CORP6HITACHI AUTOMOTIVE SYSTEMS LTD2ATSUGI MOTOR PARTS CO LTD1HITACHI ASTEMO LTD1
Top patents by PatentIndex Score
26 records- 0192US8550427B2Normally-open solenoid valve including plunger formed with pressure receiving portionYOSHIDA KEIGO·Filed 2010·Granted Oct 8, 2013·18 cites·18 claims
- 0288US7596441B2Power steering deviceHITACHI LTD·Filed 2006·Granted Sep 29, 2009·22 cites·6 claims
- 0385US6568499B2Power steering system for vehiclesUNISIA JECS CORP·Filed 2001·Granted May 27, 2003·37 cites·24 claims
- 0478US7155906B2Power steering systemHITACHI LTD·Filed 2005·Granted Jan 2, 2007·13 cites·22 claims
- 0577US7213676B2Power steering systemHITACHI LTD·Filed 2005·Granted May 8, 2007·13 cites·23 claims
- 0676US5174338APressure control valve unitATSUGI MOTOR PARTS CO LTD·Filed 1991·Granted Dec 29, 1992·44 cites·11 claims
- 0775US6886657B2Power steering systemHITACHI LTD·Filed 2003·Granted May 3, 2005·13 cites·5 claims
- 0874US6880668B2Power steering deviceHITACHI LTD·Filed 2002·Granted Apr 19, 2005·20 cites·10 claims
- 0973US7387186B2Power steering apparatusHITACHI LTD·Filed 2005·Granted Jun 17, 2008·7 cites·20 claims
- 1069US7086494B2Power steering systemHITACHI LTD·Filed 2005·Granted Aug 8, 2006·7 cites·4 claims
- 1166US6041883AFlow controlling apparatus for power steering systemsUNISIA JECS CORP·Filed 1997·Granted Mar 28, 2000·30 cites·13 claims
- 1266US5921342APower assisted steering apparatus for automotive vehicleUNISIA JECS CORP·Filed 1997·Granted Jul 13, 1999·19 cites·12 claims
- 1365US12384454B2Steer-by-wire control device and steer-by-wire control methodHITACHI ASTEMO LTD·Filed 2022·Granted Aug 12, 2025·0 cites·11 claims
- 1463US7325645B2Power steering deviceHITACHI LTD·Filed 2005·Granted Feb 5, 2008·5 cites·8 claims
- 1563US5950757APower steering devicesUNISIA JECS CORP·Filed 1997·Granted Sep 14, 1999·21 cites·9 claims
- 1656US8727453B2Hydraulic pressure control apparatusSAITA NORIHIRO·Filed 2011·Granted May 20, 2014·2 cites·20 claims
- 1755US6953102B2Power steering systemHITACHI LTD·Filed 2004·Granted Oct 11, 2005·8 cites·8 claims
- 1853US7155905B2Power steering apparatusHITACHI LTD·Filed 2005·Granted Jan 2, 2007·2 cites·20 claims
- 1945US11377136B2Steering deviceHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2019·Granted Jul 5, 2022·0 cites·22 claims
- 2044US6851507B2Power steering systemHITACHI UNISIA AUTOMOTIVE LTD·Filed 2004·Granted Feb 8, 2005·3 cites·15 claims
- 2144US2008230337A1Brake control apparatus for vehiclesHITACHI LTD·Filed 2008·Application pending·0 cites
- 2243US2014076429A1Pump ApparatusHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2013·Application pending·0 cites
- 2342US5975232APower assisted steering apparatus for automotive vehicleUNISIA JECS CORP·Filed 1997·Granted Nov 2, 1999·11 cites·6 claims
- 2442US2007074926A1Power steering deviceHITACHI LTD·Filed 2006·Application pending·0 cites
- 2538US2008006469A1Power Steering Device and Method of Controlling the Power Steering DeviceHITACHI LTD·Filed 2004·Application pending·0 cites
- 2636US6035958APower assist apparatus for steering systemUNISIA JECS CORP·Filed 1997·Granted Mar 14, 2000·8 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →