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Kazuhiko Ikoma
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Komaki, JP
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last 30 patents
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Patent Grant
Process for producing aluminum nitride sintered body with high ther...
Patent number
4,997,798
Issue date
Mar 5, 1991
NGK Spark Plug Co., Ltd.
Akiyasu Okuno
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Aluminum nitride sintered body with high thermal conductivity and p...
Patent number
4,961,987
Issue date
Oct 9, 1990
NGK Spark Plug Co., Ltd.
Akiyasu Okuno
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Aluminum nitride sintered body with high thermal conductivity and p...
Patent number
4,877,760
Issue date
Oct 31, 1989
NGK Spark Plug Co., Ltd.
Akiyasu Okuno
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Composite layer aluminum nitride base sintered body
Patent number
4,800,137
Issue date
Jan 24, 1989
NGK Spark Plug Co., Ltd.
Akiyasu Okuno
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information
Patent Grant
Composite layer aluminum nitride base sintered body
Patent number
4,695,517
Issue date
Sep 22, 1987
NGK Spark Plug Co., Ltd.
Akiyasu Okuno
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES