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Naoyuki Katoh
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Mobara, JP
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last 30 patents
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Patent Grant
Color cathode-ray tube including a shadow mask having holes arrange...
Patent number
5,917,273
Issue date
Jun 29, 1999
Hitachi, Ltd.
Mitsuru Watanabe
H01 - BASIC ELECTRIC ELEMENTS
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Patent Grant
Color cathode-ray tube including a shadow mask having holes arrange...
Patent number
5,633,558
Issue date
May 27, 1997
Hitachi, Ltd.
Mitsuru Watanabe
H01 - BASIC ELECTRIC ELEMENTS