Inventor
HISAMUNE YOSIAKI
JP12 patents
Patents
12 patentsUS6010946AJan 4, 2000
Semiconductor device with isolation insulating film tapered and method of manufacturing the same
NEC CORP245 citations98
US6214669B1Apr 10, 2001
Single-chip contact-less read-only memory (ROM) device and the method for fabricating the device
NEC CORP51 citations95
US5929480AJul 27, 1999
Nonvolatile semiconductor memory device having first and second floating gates
NEC CORP69 citations95
US6121670ASep 19, 2000
Single-chip contact-less read-only memory (ROM) device and the method for fabricating the device
NEC CORP36 citations92
US5946240AAug 31, 1999
Nonvolatile semiconductor memory device and method of manufacturing the same
NEC CORP37 citations92
US5923978AJul 13, 1999
Nonvolatile semiconductor memory and methods for manufacturing and using the same
NEC CORP24 citations92
US6057574AMay 2, 2000
Contactless nonvolatile semiconductor memory device having buried bit lines surrounded by grooved insulators
NEC CORP8 citations73
US6040234AMar 21, 2000
Method of manufacturing semiconductor device without bird beak effect
NEC CORP7 citations73
US5891775AApr 6, 1999
Method of making nonvolatile semiconductor device having sidewall split gate for compensating for over-erasing operation
NEC CORP16 citations73
US5863822AJan 26, 1999
Method of making non-volatile semiconductor memory devices having large capacitance between floating and control gates
NEC CORP9 citations73
US6414352B2Jul 2, 2002
Semiconductor device having an electronically insulating layer including a nitride layer
NEC CORP5 citations62
US6274432B1Aug 14, 2001
Method of making contactless nonvolatile semiconductor memory device having buried bit lines surrounded by grooved insulators
NEC CORP0 citations51