Katsumi Hironaka

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Hiroshima, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for manufacture of waterproof fibrous plate
- Patent number 4,587,070
- Issue date May 6, 1986
- Aoi Chemical, Inc.
- Hajime Niwa
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES