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. 22, 2025
Filed:
Feb. 03, 2020
Vitro Flat Glass Llc, Cheswick, PA (US);
José Guadalupe Cid-Aguilar, Monterrey, MX;
David R. Haskins, Gibsonia, PA (US);
Michael J. Buchanan, Cranberry Township, PA (US);
Vitro Flat Glass LLC, Cheswick, PA (US);
Abstract
The present invention provides a glass sheet having soda-lime-silica glass composition with a high visible light transmittance (L) of at least 89% with a dominant wavelength (DW) from about 490 to 505 nanometers and purity (Pe) of no more than 1% for control thickness of 5.66 mm and methods of making the same. The glass composition comprising a low iron raw material, a total iron oxide (FeO) of 0.02 to 0.06 wt. %, ferrous (FeO) from 0.006 to 0.02 wt. %, redox (FeO/FeO) from about 0.30 to 0.55, CrOfrom about 0.3 to 10 ppm, TiOfrom about 50 to 500 ppm, SnOfrom about 10 to 500 ppm, and a critical amount from about 0.10 to 0.25 wt. % of SO. The low content of iron oxide is achieved by the partial substitution of regular raw materials by low iron raw materials, with a complete substitution of regular dolomite by a low iron dolomite with a maximum content of 0.020 wt. % FeO.