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:
Oct. 17, 2017
Filed:
Sep. 24, 2014
Nihon Yamamura Glass Co., Ltd., Amagasaki-shi, JP;
Kozo Maeda, Amagasaki, JP;
Yoshitaka Mayumi, Amagasaki, JP;
NIHON YAMAMURA GLASS CO., LTD., Hyogo, JP;
Abstract
Disclosed is a sealing glass composition substantially not containing BOor AlO, which is a high-strength, high-expansive crystallizing glass composition that can be used at high temperatures of not less than 950° C. The composition substantially not containing boron oxide, alkali metal oxides or aluminum oxide, but containing, in mol %, SiO: 40-55, BaO: 18-35, TiO+ZrO: 0.1-10, ZnO: 0-15, CaO: 0-20, MgO: 0-9, SrO: 0-5, and LaO: 0-2, wherein the total content of RO (R: Mg, Ca, Sr, Ba and Zn) is at least 44 mol %, and wherein the glass composition, when fired in the form of glass powder at a temperature of 850-1050° C, turns into a crystallized glass that exhibits a thermal expansion coefficient of 90-150×10/° C. in the range of 50-850° C.