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Masayoshi Ohkawa
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Tokyo, JP
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last 30 patents
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Patent Grant
Non-volatile semiconductor memory
Patent number
6,169,692
Issue date
Jan 2, 2001
NEC Corporation
Masayoshi Ohkawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Booster circuit
Patent number
6,008,690
Issue date
Dec 28, 1999
NEC Corporation
Toshio Takeshima
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Patent Grant
Nonvolatile semiconductor memory having memory cells each storing m...
Patent number
5,894,436
Issue date
Apr 13, 1999
NEC Corporation
Masayoshi Ohkawa
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device having a meshlike grounding wiring
Patent number
5,334,863
Issue date
Aug 2, 1994
NEC Corporation
Masayoshi Ohkawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
MOSFET-type driving circuit with capacitive bootstrapping for drivi...
Patent number
4,680,488
Issue date
Jul 14, 1987
NEC Corporation
Koichiro Okumura
H03 - BASIC ELECTRONIC CIRCUITRY