Inventor
TAKESHIMA TOSHIO
JP16 patents
⚠️ This page may combine multiple inventors who share the name “TAKESHIMA TOSHIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NEC CORP
12 patentsUS5757699AMay 26, 1998
Programming which can make threshold voltages of programmed memory cells have a narrow distribution in a nonvolatile semiconductor memory
NEC CORP115 citations98
US5796652AAug 18, 1998
Non-volatile semiconductor memory capable of writing multi-value information
NEC CORP74 citations96
US6008690ADec 28, 1999
Booster circuit
NEC CORP104 citations95
US5969993AOct 19, 1999
Method of restoring data in non-volatile semiconductor memory
NEC CORP81 citations95
US6064597AMay 16, 2000
Method of programming a multilevel nonvolatile memory cell with reduced number of erase operations
NEC CORP25 citations92
US5970012AOct 19, 1999
Non-volatile semiconductor memory device having a memory cell capable of establishing multi-level information and data writing method thereof
NEC CORP30 citations92
US5894436AApr 13, 1999
Nonvolatile semiconductor memory having memory cells each storing multi-bits information
NEC CORP27 citations92
US5812018ASep 22, 1998
Voltage booster circuit
NEC CORP48 citations92
US5659503AAug 19, 1997
Nonvolatile semiconductor memory having an improved reference voltage generating circuit
NEC CORP35 citations92
US5436910AJul 25, 1995
Dynamic random access memory device having a parallel testing mode for producing arbitrary test pattern
NEC CORP42 citations92
US4737829AApr 12, 1988
Dynamic random access memory device having a plurality of one-transistor type memory cells
NEC CORP34 citations87
US6236243B1May 22, 2001
Negative voltage level detection circuit
NEC CORP9 citations73