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Hisao Yamaguchi
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Amagasaki, JP
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last 30 patents
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Patent Grant
Electromagnetic-acoustic measuring apparatus
Patent number
4,450,725
Issue date
May 29, 1984
Hitachi, Ltd.
Hisao Yamaguchi
G01 - MEASURING TESTING
Information
Patent Grant
Method and apparatus for non-contact ultrasonic flaw detection
Patent number
4,338,822
Issue date
Jul 13, 1982
Sumitomo Metal Industries, Ltd.
Hisao Yamaguchi
G01 - MEASURING TESTING
Information
Patent Grant
Fully automatic ultrasonic flaw detection apparatus
Patent number
4,294,118
Issue date
Oct 13, 1981
Sumitomo Kinzoku Kogyo Kabushiki Kaisha
Toshio Shiraiwa
B82 - NANO-TECHNOLOGY
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Patent Grant
Method for correcting the sensitivity of an electromagnetic ultraso...
Patent number
4,292,849
Issue date
Oct 6, 1981
Sumitomo Metal Industries, Ltd.
Hisao Yamaguchi
G01 - MEASURING TESTING
Information
Patent Grant
Method and apparatus for the automatic ultrasonic flaw detection
Patent number
4,270,389
Issue date
Jun 2, 1981
Sumitomo Metal Industries Limited
Toshio Shiraiwa
G01 - MEASURING TESTING