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:
Jun. 07, 2022
Filed:
Nov. 28, 2012
Vitro S.a.b. DE C.v., Nuevo León, MX;
Larry J. Shelestak, Bairdford, PA (US);
James W. McCamy, Export, PA (US);
Paul R. Ohodnicki, Jr., Allison Park, PA (US);
Hong Li, Sewickley, PA (US);
Adam D. Polcyn, Pittsburgh, PA (US);
Vitro Flat Glass LLC, Cheswick, PA (US);
Abstract
The present invention relates to a glass composition that includes: 57 to 75 percent by weight of SiO; 3 to 11 percent by weight of AlO; 6 to 11 percent by weight of NaO; 16 to 21 percent by weight of CaO; 0.01 to 0.1 percent by weight of LiO; and less than 0.05 percent by weight of KO. Each percent by weight is based on total weight of the glass composition. Glass products are also provided that have a bulk glass composition as described above. The glass products, such as flat glass products and glass substrates, have a strain point of at least 590° C. and a thermal expansion of at least 7.4 ppm/° C. The present invention also relates to magnetic recording articles and photovoltaic cells that include a glass substrate that has a bulk glass composition as described above.