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Hideaki Segawa
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Yokohama, JP
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last 30 patents
Information
Patent Grant
High purity transparent silica glass
Patent number
6,133,178
Issue date
Oct 17, 2000
Tosoh Corporation
Nobusuke Yamada
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Achromatic lens for ultraviolet rays
Patent number
5,028,967
Issue date
Jul 2, 1991
Tosoh Corporation
Nobusuke Yamada
G02 - OPTICS
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Patent Grant
High-hardness silica glass and method of producing the same
Patent number
4,981,503
Issue date
Jan 1, 1991
Tosoh Corporation
Hideaki Segawa
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Method of producing uniform silica glass block
Patent number
4,938,788
Issue date
Jul 3, 1990
Tosoh Corporation
Hideaki Segawa
C03 - GLASS MINERAL OR SLAG WOOL