Inventor
TSUJIKAWA TETSUYA
JP25 patents
⚠️ This page may combine multiple inventors who share the name “TSUJIKAWA TETSUYA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
21 patentsUS6333871B1Dec 25, 2001
Nonvolatile semiconductor memory including a controller for providing an improved reprogram operation
HITACHI LTD39 citations96
US6078519AJun 20, 2000
Semiconductor device, data processing system and a method for changing threshold of a non-volatile memory cell
HITACHI LTD43 citations96
US6046936AApr 4, 2000
Semiconductor, memory card, and data processing system
HITACHI LTD65 citations96
US5473570ADec 5, 1995
Semiconductor memory device having an improved sense amplifier arrangement
HITACHI LTD41 citations96
US6788572B2Sep 7, 2004
Non-volatile multi-level semiconductor flash memory device and method of driving same
HITACHI LTD15 citations93
US6335878B1Jan 1, 2002
Non-volatile multi-level semiconductor flash memory device and method of driving same
HITACHI LTD24 citations93
US6166950ADec 26, 2000
Nonvolatile semiconductor storage device
HITACHI LTD40 citations93
US6507520B2Jan 14, 2003
Nonvolatile memory system
HITACHI LTD22 citations92
US6301150B1Oct 9, 2001
Semiconductor device, data processing system and a method for changing threshold of a non-volatile memory cell
HITACHI LTD17 citations92
US6496411B2Dec 17, 2002
Non-volatile multi-level semiconductor flash memory device and method of driving same
HITACHI LTD12 citations82
US6233174B1May 15, 2001
Non volatile semiconductor, memory
HITACHI LTD12 citations82
US5748532AMay 5, 1998
Semiconductor nonvolatile memory device and computer system using the same
HITACHI LTD16 citations82
US7079416B2Jul 18, 2006
Non-volatile multi-level, semiconductor flash memory device and method of driving same
HITACHI LTD10 citations74
US6590808B1Jul 8, 2003
Non-volatile multi-level semiconductor flash memory device and method of driving same
HITACHI LTD4 citations74
US6504764B2Jan 7, 2003
Non-volatile memory device
HITACHI LTD8 citations74
US6456526B2Sep 24, 2002
Non-volatile memory device operation in response to two different types of read commands and a write command which includes write verification
HITACHI LTD7 citations74
US5872734AFeb 16, 1999
Semiconductor nonvolatile memory device and computer system using the same
HITACHI LTD14 citations74
US5654916AAug 5, 1997
Semiconductor memory device having an improved sense amplifier arrangement
HITACHI LTD12 citations74
US5699311ADec 16, 1997
Semiconductor memory device
HITACHI LTD1 citations63
US6490195B2Dec 3, 2002
Semiconductor device, data processing system and a method for changing threshold of a non-volatile memory cell
HITACHI LTD2 citations62
US6320793B2Nov 20, 2001
Non-volatile memory device
HITACHI LTD0 citations52
RENESAS TECH CORP
2 patentsUS6711054B2Mar 23, 2004
Semiconductor device, data processing system and a method for changing threshold of a non-volatile memory cell
RENESAS TECH CORP22 citations92
US6721207B2Apr 13, 2004
Non-volatile memory system including a control device to control writing, reading and storage and output operations of non-volatile devices including memory cells and data latches
RENESAS TECH CORP8 citations74