Inventor · disambiguated record
Keizo Shimada
Also filed as: SHIMADA KEIZO
13 granted patents·2 pending applications·478 citations·filing 1993–2009
93Inventor score
Top patents by PatentIndex Score
15 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
- 0293US5446645AInverter apparatus and uinterruptible power supply using the sameHITACHI LTD·Filed 1993·Granted Aug 29, 1995·279 cites·4 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
- 0575US7542312B2Electric power converterHITACHI LTD·Filed 2007·Granted Jun 2, 2009·10 cites·18 claims
- 0667US5892674AMethod and apparatus for power converting AC into DC or DC into AC by converter having common phase connectionHITACHI LTD·Filed 1997·Granted Apr 6, 1999·40 cites·17 claims
- 0765US7315144B2AC drive apparatus, vehicle control apparatus, and power conversion method and vehicle control methodHITACHI LTD·Filed 2006·Granted Jan 1, 2008·9 cites·21 claims
- 0862US6084785AElectric power converterHITACHI LTD·Filed 1998·Granted Jul 4, 2000·31 cites·11 claims
- 0961US7548439B2Electric power converter for reducing generated high frequency componentsHITACHI LTD·Filed 2005·Granted Jun 16, 2009·5 cites·17 claims
- 1058US8523296B2Electric drive vehicleKIKUCHI AKIRA·Filed 2007·Granted Sep 3, 2013·6 cites·14 claims
- 1151US8151915B2Electric drive vehicleKIKUCHI AKIRA·Filed 2009·Granted Apr 10, 2012·2 cites·12 claims
- 1251US7025514B2Development apparatus for manufacturing semiconductor deviceOKI ELECTRIC IND CO LTD·Filed 2003·Granted Apr 11, 2006·4 cites·5 claims
- 1342US5959858AElectric power conversion apparatusHITACHI LTD·Filed 1997·Granted Sep 28, 1999·12 cites·20 claims
- 1439US2006086547A1Electric drive system for vehicle, electric control system for vehicle, electric drive method for vehicleSHIMADA KEIZO·Filed 2005·Application pending·0 cites
- 1539US2006221656A1Electric power converterHITACHI LTD·Filed 2006·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →