Inventor · disambiguated record
Naoshi Sugawara
Also filed as: SUGAWARA NAOSHI
8 granted patents·1 pending application·133 citations·filing 2002–2021
87Inventor score
Top patents by PatentIndex Score
9 records- 0193US7888894B2Electric motor control system, series hybrid vehicle, electric motor control apparatus, and electric motor control methodHITACHI LTD·Filed 2008·Granted Feb 15, 2011·55 cites·27 claims
- 0282US6567282B1Apparatus and method of sensorless control for synchronous generatorHITACHI LTD·Filed 2002·Granted May 20, 2003·26 cites·5 claims
- 0376US7841434B2Electric drive system for vehicle, electric control system for vehicle, electric drive method for vehicleHITACHI LTD·Filed 2009·Granted Nov 30, 2010·11 cites·2 claims
- 0475US7583036B2Electrically driven vehicleHITACHI LTD·Filed 2007·Granted Sep 1, 2009·14 cites·12 claims
- 0565US7315144B2AC drive apparatus, vehicle control apparatus, and power conversion method and vehicle control methodHITACHI LTD·Filed 2006·Granted Jan 1, 2008·9 cites·21 claims
- 0664US6720753B2Power generation system using synchronous generatorHITACHI LTD·Filed 2002·Granted Apr 13, 2004·12 cites·5 claims
- 0761US12365254B2Electric vehicle and electric vehicle systemHITACHI INDUSTRIAL PRODUCTS LTD·Filed 2021·Granted Jul 22, 2025·0 cites·11 claims
- 0858US8523296B2Electric drive vehicleKIKUCHI AKIRA·Filed 2007·Granted Sep 3, 2013·6 cites·14 claims
- 0939US2006086547A1Electric drive system for vehicle, electric control system for vehicle, electric drive method for vehicleSHIMADA KEIZO·Filed 2005·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →