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Kiyokazu Hashimoto
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Tokyo, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Semiconductor memory device having multilevel memory cell and metho...
Patent number
6,479,874
Issue date
Nov 12, 2002
NEC Corporation
Kenji Hibino
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device having a small memory cell driving circuit
Patent number
6,125,074
Issue date
Sep 26, 2000
NEC Corporation
Nobuo Murakami
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory
Patent number
5,889,716
Issue date
Mar 30, 1999
NEC Corporation
Kiyokazu Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device having multilevel memory cell array
Patent number
5,838,610
Issue date
Nov 17, 1998
NEC Corporation
Kiyokazu Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device for plurality of ranges of power supply...
Patent number
5,742,558
Issue date
Apr 21, 1998
NEC Corporation
Kiyokazu Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Grant
ROM type semiconductor memory device with large operating margin
Patent number
5,717,640
Issue date
Feb 10, 1998
NEC Corporation
Kiyokazu Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Multi-stage ROM wherein a cell current of a selected memory cell is...
Patent number
5,668,752
Issue date
Sep 16, 1997
NEC Corporation
Kiyokazu Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device having presetting function sense amplifier
Patent number
5,555,217
Issue date
Sep 10, 1996
NEC Corporation
Kiyokazu Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device having presetting function of sense amp...
Patent number
5,530,671
Issue date
Jun 25, 1996
NEC Corporation
Kiyokazu Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Non-volatile semiconductor memory device capable of checking the th...
Patent number
5,513,193
Issue date
Apr 30, 1996
NEC Corporation
Kiyokazu Hashimoto
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Semiconductor integrated circuit device having internal step-down p...
Patent number
5,430,682
Issue date
Jul 4, 1995
NEC Corporation
Kimiyasu Ishikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Nonvolatile semiconductor memory device
Patent number
5,408,433
Issue date
Apr 18, 1995
NEC Corporation
Kiyokazu Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device
Patent number
5,392,236
Issue date
Feb 21, 1995
NEC Corporation
Kiyokazu Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory
Patent number
5,363,340
Issue date
Nov 8, 1994
NEC Corporation
Kimiyasu Ishikawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor integrated circuit device having digit line biasing m...
Patent number
5,353,252
Issue date
Oct 4, 1994
NEC Corporation
Kiyokazu Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Non-volatile semiconductor memory device equipped with high-speed s...
Patent number
5,351,212
Issue date
Sep 27, 1994
NEC Corporation
Kiyokazu Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Nonvolatile semiconductor memory device with redundancy circuit
Patent number
5,329,488
Issue date
Jul 12, 1994
NEC Corporation
Kiyokazu Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Non-volatile semiconductor memory device equipped with high-speed s...
Patent number
5,293,333
Issue date
Mar 8, 1994
NEC Corporation
Kiyokazu Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Read only memory device with high speed data output unit
Patent number
5,241,505
Issue date
Aug 31, 1993
NEC Corporation
Kiyokazu Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Non-volatile semiconductor memory and method for driving the same
Patent number
5,214,606
Issue date
May 25, 1993
NEC Corporation
Kiyokazu Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Circuit responsive to a voltage change for detecting erroneous writ...
Patent number
5,016,222
Issue date
May 14, 1991
NEC Corporation
Kiyokazu Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Power supply voltage drop detection circuit for use in EEPROM memory
Patent number
5,008,566
Issue date
Apr 16, 1991
NEC Corporation
Kiyokazu Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device
Patent number
4,974,207
Issue date
Nov 27, 1990
NEC Corporation
Kiyokazu Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Non-volatile semiconductor memory device having means to latch the...
Patent number
4,887,242
Issue date
Dec 12, 1989
NEC Corporation
Kiyokazu Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device
Patent number
4,878,220
Issue date
Oct 31, 1989
NEC Corporation
Kiyokazu Hashimoto
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Grant
Semiconductor memory system
Patent number
4,775,958
Issue date
Oct 4, 1988
NEC Corporation
Kiyokazu Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device having improved data output circuit
Patent number
4,761,765
Issue date
Aug 2, 1988
NEC Corporation
Kiyokazu Hashimoto
G11 - INFORMATION STORAGE
Information
Patent Grant
Voltage detection circuit for detecting input voltage larger in abs...
Patent number
4,658,156
Issue date
Apr 14, 1987
NEC Corporation
Kiyokazu Hashimoto
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
SEMICONDUCTOR MEMORY DEVICE HAVING MULTILEVEL MEMORY CELL AND METHO...
Publication number
20010042893
Publication date
Nov 22, 2001
KENJI HIBINO
H01 - BASIC ELECTRIC ELEMENTS