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Katsumi Katoh
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Katsuta, JP
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last 30 patents
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Patent Grant
Circuit design system, image processing method and medium of the ci...
Patent number
6,173,433
Issue date
Jan 9, 2001
Nippon Telegraph and Telephone Corporation
Katsumi Katoh
G06 - COMPUTING CALCULATING COUNTING
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Patent Grant
Waveguide-type optical matrix switch
Patent number
5,247,594
Issue date
Sep 21, 1993
Nippon Telegraph & Telephone Corporation
Masayuki Okuno
G02 - OPTICS