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:
Feb. 24, 2015
Filed:
Jul. 12, 2012
Kensuke Nagai, Tokyo, JP;
Yuichi Suzuki, Tokyo, JP;
Terutaka Maehara, Tokyo, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
To provide a colored glass plate, which uses sodium sulfate (NaSO) as a refining agent and which is capable of stably maintaining the mass percentage of divalent iron calculated as FeOin the total iron calculated as FeOat a high level, while suppressing development of an amber color that is derived from sodium sulfate. A colored glass plate made of alkali-containing silica glass containing elements of iron, tin and sulfur, wherein the percentage of the total sulfur calculated as SOis at least 0.025% as represented by mass percentage based on oxides, the percentage of divalent iron calculated as FeOin the total iron calculated as FeOis from 60 to 80% as represented by mass percentage, and the percentage of divalent tin calculated as SnOin the total tin calculated as SnOis at least 0.1% as represented by mol percentage.