Inventor · disambiguated record
Takefumi Sawada
Also filed as: SAWADA TAKEFUMI
5 granted patents·250 citations·filing 2000–2007
84Inventor score
Files withHITACHI LTD5
Top patents by PatentIndex Score
5 records- 0196US6788024B2Position-sensorless motor control method and apparatusHITACHI LTD·Filed 2003·Granted Sep 7, 2004·90 cites·15 claims
- 0292US7759888B2AC motor controllerHITACHI LTD·Filed 2005·Granted Jul 20, 2010·28 cites·1 claims
- 0391US6329781B1Control apparatus of synchronous motorsHITACHI LTD·Filed 2000·Granted Dec 11, 2001·99 cites·8 claims
- 0480US7541769B2Electric power converter and motor driving systemHITACHI LTD·Filed 2007·Granted Jun 2, 2009·14 cites·7 claims
- 0561US6914408B2Motor control apparatus and electric vehicle using sameHITACHI LTD·Filed 2001·Granted Jul 5, 2005·19 cites·23 claims
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