Aluminum-free borosilicate glass

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 10570052
APP PUB NO 20180079679A1
SERIAL NO

15705428

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Abstract

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An aluminum-free borosilicate glass includes the following glass composition (in weight-% on oxide basis): 70-80 SiO2; 8-14 B2O3; 0 Al2O3; 0-4 Na2O; 3-10 K2O; 0 Li2O; 3-14 sum Na2O+K2O; 0-1 CaO; 0-1 MgO; 0-1 BaO; 0-1 SrO; 0-2 sum CaO+MgO+BaO+SrO; 0-1 ZnO; 3.6-14 ZrO2; 0-10 TiO2; and 0.01-2.0 one or more refining agents, the weight ratio of ZrO2:K2O being in a range of 1.2:1 to 1.4:1.

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Patent Owner(s)

Patent OwnerAddress
SCHOTT AG55122 MAINZ

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kass, Christof Tirschenreuth, DE 18 310

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