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Wataru Hasegawa
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Osaka, JP
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last 30 patents
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Patent Grant
Cold cathode fluorescent lamp driving apparatus using a piezoelectr...
Patent number
6,028,398
Issue date
Feb 22, 2000
Matsushita Electric Industrial, Co., Ltd.
Osamu Kawasaki
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Video and sound recording device with automatic focusing system
Patent number
4,472,742
Issue date
Sep 18, 1984
West Electric Co., Ltd.
Wataru Hasegawa
G02 - OPTICS
Information
Patent Grant
Apparatus and method for transmitting ultrasonic wave
Patent number
4,467,362
Issue date
Aug 21, 1984
West Electric Company, Ltd.
Wataru Hasegawa
G01 - MEASURING TESTING
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Patent Grant
Automatic focusing camera
Patent number
4,364,652
Issue date
Dec 21, 1982
West Electric Co., Ltd.
Hiroshi Iwata
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Automatic focusing camera
Patent number
4,284,336
Issue date
Aug 18, 1981
West Electric Co., Ltd.
Hiroshi Iwata
G02 - OPTICS