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Noboru Akazawa
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Sagamihara, JP
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last 30 patents
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Patent Grant
Method of performing an ion exchange of optical glass
Patent number
5,139,557
Issue date
Aug 18, 1992
Nippon Sheet Glass Co., Ltd.
Shigeo Kittaka
C03 - GLASS MINERAL OR SLAG WOOL
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Patent Grant
Cesium-containing optical glass
Patent number
4,472,030
Issue date
Sep 18, 1984
Nippon Sheet Glass Company, Limited
Masakiyo Tachibana
C03 - GLASS MINERAL OR SLAG WOOL