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:
Jul. 14, 2009
Filed:
Sep. 08, 2005
Larry J. Shelestak, Bairdford, PA (US);
Mehran Arbab, Pittsburgh, PA (US);
Dennis G. Smith, Butler, PA (US);
Larry J. Shelestak, Bairdford, PA (US);
Mehran Arbab, Pittsburgh, PA (US);
Dennis G. Smith, Butler, PA (US);
PPG Industries Ohio, Inc., Cleveland, OH (US);
Abstract
A novel glass composition is disclosed. The glass composition includes a base glass composition made up of SiOfrom 65 to 75 weight percent, NaO from 10 to 20 weight percent, CaO from 5 to 15 weight percent, MgO from 0 to 5 weight percent, AlOfrom 0 to 5 weight percent, KO from 0 to 5 weight percent, BO0 to 5%, and MnO0 to 0.5%, and a colorant and property modifying material portion made up of total iron up to 0.65 weight percent, Se ranging from 2 PPM to 10 PPM, at least one UV absorber selected from CeO, VO, TiOand MoO, CoO up to 20 PPM, and CrOup to 75 PPM, wherein the glass composition has a redox ratio ranging from 0.2 to 0.6.