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Kaoru Takanashi
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Fujisawa-shi, JP
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Patents Grants
last 30 patents
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Patent Grant
Threaded joint for steel pipes
Patent number
7,770,935
Issue date
Aug 10, 2010
Sumitomo Metal Industries, Ltd.
Ryuichi Imai
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Patents Applications
last 30 patents
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Patent Application
Threaded joint for steel pipes
Publication number
20060197343
Publication date
Sep 7, 2006
Ryuichi Imai
C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...