Inventor
SAKURAI NAOKI
JP37 patents
⚠️ This page may combine multiple inventors who share the name “SAKURAI NAOKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
26 patentsUS6180966B1Jan 30, 2001
Trench gate type semiconductor device with current sensing cell
HITACHI LTD166 citations99
US5412558AMay 2, 1995
Semiconductor integrated circuit unit
HITACHI LTD187 citations99
US5631494AMay 20, 1997
Power semiconductor device with low on-state voltage
HITACHI LTD62 citations96
US5093779AMar 3, 1992
Computer file system
HITACHI LTD63 citations96
US5101244AMar 31, 1992
Semiconductor schottky device with pn regions
HITACHI LTD95 citations95
US5877518AMar 2, 1999
Semiconductor device and inverter apparatus using the semiconductor device
HITACHI LTD18 citations92
US5274541ADec 28, 1993
Parallel circuit module including a diode and an IGBT
HITACHI LTD32 citations92
US5253156AOct 12, 1993
Semiconductor integrated circuit unit
HITACHI LTD45 citations92
US5278443AJan 11, 1994
Composite semiconductor device with Schottky and pn junctions
HITACHI LTD34 citations91
US5166760ANov 24, 1992
Semiconductor Schottky barrier device with pn junctions
HITACHI LTD39 citations91
US5343052AAug 30, 1994
Lateral insulated gate bipolar transistor
HITACHI LTD42 citations89
US7851866B2Dec 14, 2010
Electric power conversion device
HITACHI LTD11 citations84
US7679944B2Mar 16, 2010
Motor drive
HITACHI LTD11 citations84
US7973405B2Jul 5, 2011
Integrated circuit for driving semiconductor device and power converter
HITACHI LTD13 citations83
US7763974B2Jul 27, 2010
Integrated circuit for driving semiconductor device and power converter
HITACHI LTD12 citations83
US5977606ANov 2, 1999
Dielectric isolated high voltage semiconductor device
HITACHI LTD10 citations74
US5463243AOct 31, 1995
Dielectric isolated high voltage semiconductor device
HITACHI LTD10 citations74
US5126806AJun 30, 1992
Lateral insulated gate bipolar transistor
HITACHI LTD14 citations74
US6144046ANov 7, 2000
Power inverter having series connection of semiconductor devices each having an inverse parallel connection of an insulated gate bipolar transistor and a diode
HITACHI LTD10 citations72
US5962877AOct 5, 1999
Inverter apparatus having improved switching element
HITACHI LTD5 citations63
US5747829AMay 5, 1998
Dielectric isolated high voltage semiconductor device
HITACHI LTD4 citations63
US5701018ADec 23, 1997
Semiconductor device having parallel connection of an insulated gate bipolar transistor and a diode
HITACHI LTD4 citations61
US10318679B2Jun 11, 2019
Calculation method of switching waveform of the inverter and circuit simulation model
HITACHI LTD0 citations52
US10566876B2Feb 18, 2020
Axial gap rotary electric machine
HITACHI LTD0 citations51
US7957167B2Jun 7, 2011
Semiconductor element drive device with level shift circuit and apparatus including the same
HITACHI LTD0 citations42
US10804765B2Oct 13, 2020
Electromechanical integral motor
HITACHI LTD0 citations37