Inventor
YAMAOKA MASAMI
JP29 patents
⚠️ This page may combine multiple inventors who share the name “YAMAOKA MASAMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON DENSO CO
20 patentsUS5689130ANov 18, 1997
Vertical semiconductor device with ground surface providing a reduced ON resistance
NIPPON DENSO CO32 citations96
US5242862ASep 7, 1993
Semiconductor device and method of manufacturing same
NIPPON DENSO CO38 citations96
US4896199AJan 23, 1990
Semiconductor device with protective means against overheating
NIPPON DENSO CO59 citations96
US4879254ANov 7, 1989
Method of manufacturing a DMOS
NIPPON DENSO CO94 citations96
US4760434AJul 26, 1988
Semiconductor device with protective means against overheating
NIPPON DENSO CO107 citations96
US5360765ANov 1, 1994
Method of forming electrodes of semiconductor device
NIPPON DENSO CO20 citations92
US5250449AOct 5, 1993
Vertical type semiconductor device and method for producing the same
NIPPON DENSO CO45 citations92
US5248623ASep 28, 1993
Method for making a polycrystalline diode having high breakdown
NIPPON DENSO CO32 citations92
US5128823AJul 7, 1992
Power semiconductor apparatus
NIPPON DENSO CO22 citations92
US5663096ASep 2, 1997
Method of manufacturing a vertical semiconductor device with ground surface providing a reduced ON resistance
NIPPON DENSO CO13 citations82
US5994187ANov 30, 1999
Method of manufacturing a vertical semiconductor device
NIPPON DENSO CO8 citations74
US5264720ANov 23, 1993
High withstanding voltage transistor
NIPPON DENSO CO7 citations74
US5168337ADec 1, 1992
Polycrystalline diode and a method for making the same
NIPPON DENSO CO13 citations74
US5136348AAug 4, 1992
Structure and manufacturing method for thin-film semiconductor diode device
NIPPON DENSO CO14 citations74
US5072277ADec 10, 1991
Semiconductor device with gradually varying doping levels to compensate for thickness variations
NIPPON DENSO CO18 citations74
US5876861AMar 2, 1999
Sputter-deposited nickel layer
NIPPON DENSO CO9 citations73
US4994880AFeb 19, 1991
Semiconductor device constituting bipolar transistor
NIPPON DENSO CO13 citations72
US4680608AJul 14, 1987
Semiconductor device
NIPPON DENSO CO12 citations72
US4672402AJun 9, 1987
Semiconductor circuit device including an overvoltage protection element
NIPPON DENSO CO14 citations72
US5596217AJan 21, 1997
Semiconductor device including overvoltage protection diode
NIPPON DENSO CO5 citations60
DENSO CORP
5 patentsUS6903417B2Jun 7, 2005
Power semiconductor device
DENSO CORP4 citations74
US6498366B1Dec 24, 2002
Semiconductor device that exhibits decreased contact resistance between substrate and drain electrode
DENSO CORP6 citations74
US6949434B2Sep 27, 2005
Method of manufacturing a vertical semiconductor device
DENSO CORP2 citations63
US7064033B2Jun 20, 2006
Semiconductor device and method of manufacturing same
DENSO CORP0 citations52
US6649478B2Nov 18, 2003
Semiconductor device and method of manufacturing same
DENSO CORP0 citations52
NIPPON SOKEN
4 patentsUS5313092AMay 17, 1994
Semiconductor power device having walls of an inverted mesa shape to improve power handling capability
NIPPON SOKEN45 citations92
US5204282AApr 20, 1993
Semiconductor circuit structure and method for making the same
NIPPON SOKEN34 citations92
US5164218ANov 17, 1992
Semiconductor device and a method for producing the same
NIPPON SOKEN25 citations92
US5461253AOct 24, 1995
Semiconductor substrate structure for producing two isolated circuits on a same substrate
NIPPON SOKEN12 citations73