Hiroyuki Yoshida

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Kawasaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Boron nitride containing material
- Patent number 5,908,795
- Issue date Jun 1, 1999
- NKK Corporation
- Hiroaki Nishio
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Boron nitride-containing material and method thereof
- Patent number 5,633,214
- Issue date May 27, 1997
- NKK Corporation
- Hiroaki Nishio
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES