The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 04, 2012
Filed:
Jan. 26, 2010
Yuya Shimada, Tokyo, JP;
Manabu Nishizawa, Tokyo, JP;
Junichiro Kase, Tokyo, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
To provide a glass plate which has a low BOcontent and which can be used as a glass plate for e.g. an LCD panel. A glass plate which comprises, as a glass matrix composition as represented by mass % based on oxide, from 53 to 74 mass % of SiO, from 15 to 23 mass % of AlO, from 0 to 3 mass % of BO, from 2 to 17 mass % of MgO, from 0 to 12 mass % of CaO, from 0 to 6 mass % of SrO, from 6 to 28 mass % of MgO+CaO+SrO, from 0 to 9 mass % of NaO, from 0 to 6 mass % of KO and from 0.8 to 11 mass % of NaO+KO, contains from 100 to 500 ppm of SO, has an average coefficient of thermal expansion from 50 to 350° C. of at most 60×10/° C., and has a strain point of at least 600° C.