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Hiroyuki Yoshida
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Kawasaki, JP
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last 30 patents
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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
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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