Inventor

WATSUJI YUKIHIRO

JP5 patents

Patents

5 patents

US5475249ADec 12, 1995

Nonvolatile semiconductor device to erase with a varying potential difference

SEIKO EPSON CORP23 citations91

US5654920AAug 5, 1997

Nonvolatile semiconductor storage system

SEIKO EPSON CORP15 citations81

US5574686ANov 12, 1996

Nonvolatile semiconductor storage system

SEIKO EPSON CORP12 citations72

US5432738AJul 11, 1995

Nonvolatile semiconductor storage system

SEIKO EPSON CORP13 citations72

US5798546AAug 25, 1998

Nonvolatile semiconductor device

SEIKO EPSON CORP2 citations61