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:
Jan. 10, 2017
Filed:
Nov. 17, 2015
Asahi Glass Company, Limited, Chiyoda-ku, JP;
Hirofumi Tokunaga, Tokyo, JP;
Tomoyuki Tsujimura, Tokyo, JP;
Manabu Nishizawa, Tokyo, JP;
Akio Koike, Tokyo, JP;
ASAHI GLASS COMPANY, LIMITED, Chiyoda-ku, JP;
Abstract
The present invention relates to a non-alkali glass having a strain point of from 710° C. to lower than 725° C., an average thermal expansion coefficient at from 50 to 300° C. of from 30×10to 43×10/° C., a temperature Tat which glass viscosity reaches 10dPa·s of 1710° C. or lower, a temperature Tat which the glass viscosity reaches 10dPa·s of 1320° C. or lower, and containing, indicated by mol % on the basis of oxides, SiO66 to 70, AlO12 to 14, BOexceeding 0 to 1.5, MgO exceeding 9.5 to 13 (or 5 to 9.5), CaO 4 to 9 (or 4 to 11), SrO 0.5 to 4.5, BaO 0 to 0.5 and ZrO 0 to 2.