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Yasuyuki Sugawara
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Chiba, JP
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last 30 patents
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Patent Grant
Optical fiber cable having a neutral axis defining a zero stress
Patent number
4,836,639
Issue date
Jun 6, 1989
Fujikura Ltd.
Naoki Shamoto
G02 - OPTICS
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Patent Grant
Water penetration-detecting apparatus and optical fiber cable using...
Patent number
4,812,014
Issue date
Mar 14, 1989
Fujikura Ltd.
Hiroyuki Sawano
G01 - MEASURING TESTING