Inventor
OTSUKI MASAHITO
JP30 patents
⚠️ This page may combine multiple inventors who share the name “OTSUKI MASAHITO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJI ELECTRIC CO LTD
24 patentsUS6737705B2May 18, 2004
Insulated gate semiconductor device
FUJI ELECTRIC CO LTD58 citations96
US6559023B2May 6, 2003
Method of fabricating a semiconductor device with phosphorous and boron ion implantation, and by annealing to control impurity concentration thereof
FUJI ELECTRIC CO LTD26 citations92
US6501128B1Dec 31, 2002
Insulated gate transistor and the method of manufacturing the same
FUJI ELECTRIC CO LTD20 citations92
US6218888B1Apr 17, 2001
Insulated gate bipolar transistor device with a current limiting circuit
FUJI ELECTRIC CO LTD28 citations92
US5705835AJan 6, 1998
Semiconductor device and method of manufacturing the same
FUJI ELECTRIC CO LTD35 citations92
US5559355ASep 24, 1996
Vertical MOS semiconductor device
FUJI ELECTRIC CO LTD27 citations92
US5397905AMar 14, 1995
Power semiconductor device having an insulated gate field effect transistor and a bipolar transistor
FUJI ELECTRIC CO LTD22 citations92
US5378903AJan 3, 1995
Semiconductor device with low on-voltage and large controllable turn-off current
FUJI ELECTRIC CO LTD20 citations92
US5894139AApr 13, 1999
Semiconductor device structure for insulated gate bipolar transistor
FUJI ELECTRIC CO LTD34 citations91
US5561393AOct 1, 1996
Control device of semiconductor power device
FUJI ELECTRIC CO LTD42 citations91
US5530277AJun 25, 1996
Insulated-gate bipolar transistor
FUJI ELECTRIC CO LTD25 citations91
US5459339AOct 17, 1995
Double gate semiconductor device and control device thereof
FUJI ELECTRIC CO LTD34 citations91
US5714774AFeb 3, 1998
Two-gate semiconductor power switching device
FUJI ELECTRIC CO LTD17 citations84
US6621120B2Sep 16, 2003
Semiconductor device
FUJI ELECTRIC CO LTD13 citations83
US10276666B2Apr 30, 2019
Semiconductor device
FUJI ELECTRIC CO LTD2 citations73
US10236677B2Mar 19, 2019
Semiconductor device
FUJI ELECTRIC CO LTD6 citations73
US9905555B2Feb 27, 2018
Semiconductor device and semiconductor device manufacturing method
FUJI ELECTRIC CO LTD3 citations73
US9881916B2Jan 30, 2018
Semiconductor device
FUJI ELECTRIC CO LTD4 citations73
US9793392B2Oct 17, 2017
Semiconductor device
FUJI ELECTRIC CO LTD3 citations73
US9559171B2Jan 31, 2017
Semiconductor device
FUJI ELECTRIC CO LTD5 citations73
US6670650B2Dec 30, 2003
Power semiconductor rectifier with ring-shaped trenches
FUJI ELECTRIC CO LTD8 citations73
US5561313AOct 1, 1996
Protective diode for transistor
FUJI ELECTRIC CO LTD16 citations69
US8008734B2Aug 30, 2011
Power semiconductor device
FUJI ELECTRIC CO LTD6 citations62
US5606183AFeb 25, 1997
Double-gated turn-off thyristor
FUJI ELECTRIC CO LTD0 citations42