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Naoki Furuhashi
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Tokyo, JP
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last 30 patents
Information
Patent Grant
Method and circuit for driving piezoelectric transformer
Patent number
6,268,681
Issue date
Jul 31, 2001
NEC Corporation
Shuuji Yamaguchi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Piezoelectric transformer drive circuit and drive method
Patent number
6,208,064
Issue date
Mar 27, 2001
NEC Corporation
Naoki Furuhashi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Power supply circuit utilizing a piezoelectric transformer that sup...
Patent number
6,151,232
Issue date
Nov 21, 2000
NEC Corporation
Naoki Furuhashi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Piezoelectric transformer driving circuit and driving method
Patent number
6,078,124
Issue date
Jun 20, 2000
NEC Corporation
Naoki Furuhashi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Driver circuit for piezoelectric transformer
Patent number
6,008,564
Issue date
Dec 28, 1999
NEC Corporation
Hirokazu Takayoshi
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Piezoelectric transformer drive circuit
Patent number
5,942,835
Issue date
Aug 24, 1999
NEC Corporation
Naoki Furuhashi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Drive circuit for driving a piezoelectric transformer capable of de...
Patent number
5,894,184
Issue date
Apr 13, 1999
NEC Corporation
Naoki Furuhashi
H01 - BASIC ELECTRIC ELEMENTS