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Masayoshi Ezawa
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Mobara, JP
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last 30 patents
Information
Patent Grant
Infrared microspectrometer
Patent number
4,922,104
Issue date
May 1, 1990
501 Hitachi, Ltd.
Kinya Eguchi
G02 - OPTICS
Information
Patent Grant
System for measuring foreign materials in liquid
Patent number
4,890,481
Issue date
Jan 2, 1990
Hitachi, Ltd.
Masayoshi Ezawa
G01 - MEASURING TESTING
Information
Patent Grant
System for measuring foreign materials in liquid
Patent number
4,779,451
Issue date
Oct 25, 1988
Hitachi, Ltd.
Masayoshi Ezawa
G01 - MEASURING TESTING
Information
Patent Grant
Technique for preventing reflections in a cathode ray tube
Patent number
4,723,091
Issue date
Feb 2, 1988
Hitachi, Ltd.
Hiromitsu Kawamura
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Projection tube whose coolant contains an ethylene oligomer
Patent number
4,717,853
Issue date
Jan 5, 1988
Hitachi, Ltd.
Masayoshi Ezawa
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Photovoltaic-storage battery device
Patent number
4,481,265
Issue date
Nov 6, 1984
Hitachi, Ltd.
Masayoshi Ezawa
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER