Kenichi Hirao

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Otsu, JP

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Patents Grantslast 30 patents

Information Patent Grant
High bending strength, large impact strength hydraulic substances r...
- Patent number 4,964,913
- Issue date Oct 23, 1990
- Toray Industries, Inc.
- Takashi Takada
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
Information Patent Grant
High tenacity acrylonitrile fibers and a process for production the...
- Patent number 4,861,659
- Issue date Aug 29, 1989
- Toray Industries, Inc.
- Takashi Takada
- D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING