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Tetsuya Tsujikawa
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Hamura, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Non-volatile multi-level semiconductor flash memory device and meth...
Patent number
7,257,026
Issue date
Aug 14, 2007
Elpida Memory, Inc.
Naoki Yamada
G11 - INFORMATION STORAGE
Information
Patent Grant
Non-volatile multi-level, semiconductor flash memory device and met...
Patent number
7,079,416
Issue date
Jul 18, 2006
Hitachi, Ltd.
Naoki Yamada
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor, memory card, and data processing system
Patent number
6,992,936
Issue date
Jan 31, 2006
Renesas Technology Corp.
Tetsuya Tsujikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Non-volatile multi-level semiconductor flash memory device and meth...
Patent number
6,788,572
Issue date
Sep 7, 2004
Hitachi, Ltd.
Naoki Yamada
G11 - INFORMATION STORAGE
Information
Patent Grant
Non-volatile memory system including a control device to control wr...
Patent number
6,721,207
Issue date
Apr 13, 2004
Renesas Technology Corp.
Tetsuya Tsujikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor device, data processing system and a method for chang...
Patent number
6,711,054
Issue date
Mar 23, 2004
Renesas Technology Corporation
Michitaro Kanamitsu
G11 - INFORMATION STORAGE
Information
Patent Grant
Non-volatile multi-level semiconductor flash memory device and meth...
Patent number
6,590,808
Issue date
Jul 8, 2003
Hitachi, Ltd.
Naoki Yamada
G11 - INFORMATION STORAGE
Information
Patent Grant
Nonvolatile memory system
Patent number
6,507,520
Issue date
Jan 14, 2003
Hitachi, Ltd.
Tetsuya Tsujikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Non-volatile memory device
Patent number
6,504,764
Issue date
Jan 7, 2003
Hitachi, Ltd.
Tetsuya Tsujikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Non-volatile multi-level semiconductor flash memory device and meth...
Patent number
6,496,411
Issue date
Dec 17, 2002
Hitachi, Ltd.
Naoki Yamada
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor device, data processing system and a method for chang...
Patent number
6,490,195
Issue date
Dec 3, 2002
Hitachi, Ltd.
Michitaro Kanamitsu
G11 - INFORMATION STORAGE
Information
Patent Grant
Non-volatile memory device operation in response to two different t...
Patent number
6,456,526
Issue date
Sep 24, 2002
Hitachi, Ltd.
Tetsuya Tsujikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Non-volatile multi-level semiconductor flash memory device and meth...
Patent number
6,335,878
Issue date
Jan 1, 2002
Hitachi, Ltd.
Naoki Yamada
G11 - INFORMATION STORAGE
Information
Patent Grant
Nonvolatile semiconductor memory including a controller for providi...
Patent number
6,333,871
Issue date
Dec 25, 2001
Hitachi, Ltd.
Tetsuya Tsujikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Non-volatile memory device
Patent number
6,320,793
Issue date
Nov 20, 2001
Hitachi, Ltd.
Tetsuya Tsujikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor device, data processing system and a method for chang...
Patent number
6,301,150
Issue date
Oct 9, 2001
Hitachi, Ltd.
Michitaro Kanamitsu
G11 - INFORMATION STORAGE
Information
Patent Grant
Non volatile semiconductor, memory
Patent number
6,233,174
Issue date
May 15, 2001
Hitachi, Ltd.
Tetsuya Tsujikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Nonvolatile semiconductor storage device
Patent number
6,166,950
Issue date
Dec 26, 2000
Hitachi, Ltd.
Naoki Yamada
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor device, data processing system and a method for chang...
Patent number
6,078,519
Issue date
Jun 20, 2000
Hitachi, Ltd.
Michitaro Kanamitsu
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor, memory card, and data processing system
Patent number
6,046,936
Issue date
Apr 4, 2000
Hitachi, Ltd.
Tetsuya Tsujikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor nonvolatile memory device and computer system using t...
Patent number
5,872,734
Issue date
Feb 16, 1999
Hitachi, Ltd.
Toshihiro Tanaka
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor nonvolatile memory device and computer system using t...
Patent number
5,748,532
Issue date
May 5, 1998
Hitachi, Ltd.
Toshihiro Tanaka
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device
Patent number
5,699,311
Issue date
Dec 16, 1997
Hitachi, Ltd.
Hiroshi Sato
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device having an improved sense amplifier arra...
Patent number
5,654,916
Issue date
Aug 5, 1997
Hitachi, Ltd.
Hiroshi Sato
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device having an improved sense amplifier arra...
Patent number
5,473,570
Issue date
Dec 5, 1995
Hitachi, Ltd.
Hiroshi Sato
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
Non-volatile multi-level semiconductor flash memory device and meth...
Publication number
20060221685
Publication date
Oct 5, 2006
Naoki Yamada
G11 - INFORMATION STORAGE
Information
Patent Application
Non-volatile multi-level, semiconductor flash memory device and met...
Publication number
20050122803
Publication date
Jun 9, 2005
Naoki Yamada
G11 - INFORMATION STORAGE
Information
Patent Application
NON-VOLATILE MULTI-LEVEL, SEMICONDUCTOR FLASH MEMORY DEVICE AND MET...
Publication number
20050013167
Publication date
Jan 20, 2005
Naoki Yamada
G11 - INFORMATION STORAGE
Information
Patent Application
Semiconductor, memory card, and data processing system
Publication number
20040160829
Publication date
Aug 19, 2004
Tetsuya Tsujikawa
G11 - INFORMATION STORAGE
Information
Patent Application
Non-volatile multi-level semiconductor flash memory device and meth...
Publication number
20030214850
Publication date
Nov 20, 2003
Naoki Yamada
G11 - INFORMATION STORAGE
Information
Patent Application
Non-volatile multi-level semiconductor flash memory device and meth...
Publication number
20030117843
Publication date
Jun 26, 2003
Naoki Yamada
G11 - INFORMATION STORAGE
Information
Patent Application
Semiconductor device, data processing system and a method for chang...
Publication number
20030072202
Publication date
Apr 17, 2003
Michitaro Kanamitsu
G11 - INFORMATION STORAGE
Information
Patent Application
Non-volatile memory device
Publication number
20020191459
Publication date
Dec 19, 2002
Tetsuya Tsujikawa
G11 - INFORMATION STORAGE
Information
Patent Application
Non-volatile multi-level semiconductor flash memory device and meth...
Publication number
20020080649
Publication date
Jun 27, 2002
Naoki Yamada
G11 - INFORMATION STORAGE
Information
Patent Application
Semiconductor, memory card, and data processing system
Publication number
20020044485
Publication date
Apr 18, 2002
Tetsuya Tsujikawa
G11 - INFORMATION STORAGE
Information
Patent Application
Non-volatile memory device
Publication number
20020027807
Publication date
Mar 7, 2002
Tetsuya Tsujikawa
G11 - INFORMATION STORAGE
Information
Patent Application
Semiconductor device, data processing system and a method for chang...
Publication number
20020008991
Publication date
Jan 24, 2002
Michitaro Kanamitsu
G11 - INFORMATION STORAGE
Information
Patent Application
Nonvolatile semiconductor memory including a controller for providi...
Publication number
20020001231
Publication date
Jan 3, 2002
Tetsuya Tsujikawa
G11 - INFORMATION STORAGE
Information
Patent Application
Non-volatile memory device
Publication number
20010010644
Publication date
Aug 2, 2001
Tetsuya Tsujikawa
G11 - INFORMATION STORAGE
Information
Patent Application
Non-volatile memory device
Publication number
20010009520
Publication date
Jul 26, 2001
Tetsuya Tsujikawa
G11 - INFORMATION STORAGE