Inventor
TOMIOKA YUGO
JP13 patents
⚠️ This page may combine multiple inventors who share the name “TOMIOKA YUGO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON STEEL CORP
10 patentsUS5596527AJan 21, 1997
Electrically alterable n-bit per cell non-volatile memory with reference cells
NIPPON STEEL CORP251 citations99
US5418743AMay 23, 1995
Method of writing into non-volatile semiconductor memory
NIPPON STEEL CORP158 citations99
US5424978AJun 13, 1995
Non-volatile semiconductor memory cell capable of storing more than two different data and method of using the same
NIPPON STEEL CORP176 citations98
US5793081AAug 11, 1998
Nonvolatile semiconductor storage device and method of manufacturing
NIPPON STEEL CORP60 citations96
US5640032AJun 17, 1997
Non-volatile semiconductor memory device with improved rewrite speed
NIPPON STEEL CORP80 citations95
US5796140AAug 18, 1998
Nonvolatile semiconductor memory device and a method of making the same
NIPPON STEEL CORP35 citations92
US5641989AJun 24, 1997
Semiconductor device having field-shield isolation structures and a method of making the same
NIPPON STEEL CORP20 citations92
US5668756ASep 16, 1997
Multi-value level type non-volatile semiconductor memory unit and method of rewriting the same
NIPPON STEEL CORP13 citations73
US5343062AAug 30, 1994
Semiconductor memory having a memory cell including a capacitor with a two-layer lower electrode
NIPPON STEEL CORP9 citations73
US5355023AOct 11, 1994
Semiconductor device having conducting layers connected through contact holes
NIPPON STEEL CORP15 citations69
NIPPON STEEL SEMICONDUCTOR
2 patentsUS5869376AFeb 9, 1999
Production method for semiconductor device having field-shield isolation structure
NIPPON STEEL SEMICONDUCTOR10 citations73
US5754464AMay 19, 1998
Mask ROM with field shield transistors functioning as memory cells and method of reading data thereof
NIPPON STEEL SEMICONDUCTOR4 citations62