Inventor · disambiguated record
Naoyuki Igarashi
Also filed as: IGARASHI NAOYUKI
5 granted patents·3 pending applications·27 citations·filing 2007–2014
74Inventor score
Files withHITACHI AUTOMOTIVE SYSTEMS LTD4HITACHI VEHICLE ENERGY LTD2HITACHI MAXELL1IGARASHI NAOYUKI1
Top patents by PatentIndex Score
8 records- 0189US9685807B2Battery control deviceHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2014·Granted Jun 20, 2017·17 cites·6 claims
- 0278US10209317B2Battery control device for calculating battery deterioration based on internal resistance increase rateHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2013·Granted Feb 19, 2019·4 cites·12 claims
- 0373US9537325B2Battery state estimation system, battery control system, battery system, and battery state estimation methodHITACHI VEHICLE ENERGY LTD·Filed 2013·Granted Jan 3, 2017·5 cites·9 claims
- 0451US9952288B2Battery controllerHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2013·Granted Apr 24, 2018·1 cites·8 claims
- 0551US9689926B2Battery controlling using charge state calculator and charge state verifierHITACHI AUTOMOTIVE SYSTEMS LTD·Filed 2013·Granted Jun 27, 2017·0 cites·10 claims
- 0644US2008089586A1Data processing system, data processing terminal and data processing program of digital penHITACHI MAXELL·Filed 2007·Application pending·0 cites
- 0743US2015346285A1Device for Assessing Extent of Degradation of Secondary BatteryHITACHI VEHICLE ENERGY LTD·Filed 2013·Application pending·0 cites
- 0841US2014239914A1Battery controllerIGARASHI NAOYUKI·Filed 2011·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →