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. 04, 2006
Filed:
Feb. 21, 2003
Mehran Arbab, Allison Park, PA (US);
Dennis G. Smith, Butler, PA (US);
Larry J. Shelestak, Bairdford, PA (US);
Mary T. Strzelecki, Laslin, PA (US);
Mehran Arbab, Allison Park, PA (US);
Dennis G. Smith, Butler, PA (US);
Larry J. Shelestak, Bairdford, PA (US);
Mary T. Strzelecki, Laslin, PA (US);
PPG Industries Ohio, Inc., Cleveland, OH (US);
Abstract
A neutral gray colored glass composition for automotive vision panels having reduced transmitted color shift characteristics is provided. The glass composition has a base portion including 65 to 75 weight percent SiO, 10 to 20 weight percent NaO, 5 to 15 weight percent CaO, 0 to 5 weight percent MgO, 0 to 5 weight percent AlO, and 0 to 5 weight percent KO. The composition also includes major colorants including 0.30 to 0.75 weight percent FeO, 0 to 15 ppm CoO, and 1 to 15 ppm Se. The glass has a luminous transmittance of at least 65 percent at a thickness of 3.9 mm, a redox ratio of 0.2 to 0.675, a TSET of less than or equal to 65 percent, and a standard color shift of less than 6.