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:
Apr. 09, 2019
Filed:
Jun. 25, 2012
Yuichi Sawai, Tokyo, JP;
Takashi Naito, Tokyo, JP;
Takuya Aoyagi, Tokyo, JP;
Tadashi Fujieda, Tokyo, JP;
Yuichi Sawai, Tokyo, JP;
Takashi Naito, Tokyo, JP;
Takuya Aoyagi, Tokyo, JP;
Tadashi Fujieda, Tokyo, JP;
HITACHI, LTD., Tokyo, JP;
Abstract
The present invention aims at providing a lead-free glass composition that can be soften and flowed at a firing temperature that is equal to or lower than that of conventional low melting point lead glass. Furthermore, the present invention aims at providing a lead-free glass composition having fine thermal stability and fine chemical stability in addition to that property. The lead-free glass composition according to the present invention is characterized by comprising at least AgO, VOand TeOwhen the components are represented by oxides, wherein the total content ratio of AgO, VOand TeOis 75 mass % or more. Preferably, the lead-free glass composition comprises 10 to 60 mass % of AgO, 5 to 65 mass % of VO, and 15 to 50 mass % of TeO.