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. 06, 2010
Filed:
Mar. 02, 2007
Mehran Arbab, Pittsburgh, PA (US);
Robert B. Heithoff, Gibsonia, PA (US);
Larry J. Shelestak, Bairdford, PA (US);
Dennis G. Smith, Butler, PA (US);
Mehran Arbab, Pittsburgh, PA (US);
Robert B. Heithoff, Gibsonia, PA (US);
Larry J. Shelestak, Bairdford, PA (US);
Dennis G. Smith, Butler, PA (US);
PPG Industries Ohio, Inc., Cleveland, OH (US);
Abstract
A glass composition for forming a blue colored glass is disclosed. The glass composition is made up of a base glass portion, iron oxide, and at least one first additive compound selected from NdOin an amount up to 1 weight percent and/or CuO in an amount up to 0.5 weight percent. The base glass portion has the following components: SiOfrom 66 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; BOfrom 0 to 5 weight percent; and KO from 0 to 5 weight percent. The total iron in the glass composition ranges from 0.3 to 1.2 weight percent, and the glass composition has a redox ratio ranging from 0.15 to 0.65.