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:
Dec. 01, 2015
Filed:
Jul. 11, 2011
Thomas D. Ketcham, Horseheads, NY (US);
Joseph J. Mcintosh, Painted Post, NY (US);
Steven M. Milillo, State College, PA (US);
Eunyoung Park, Elmira, NY (US);
Thomas D. Ketcham, Horseheads, NY (US);
Joseph J. McIntosh, Painted Post, NY (US);
Steven M. Milillo, State College, PA (US);
Eunyoung Park, Elmira, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
Isopipes () for making a glass or a glass-ceramic using a fusion process are provided. The isopipes are made from an alumina material which has a higher static fatigue than existing alumina materials intended for use as isopipes. In particular, the alumina materials have times-to-failure (static fatigues) of greater than one hour at 1200° C. at an applied stress of 10,000 psi. These high levels of static fatigue allow alumina isopipes to replace zircon isopipes in the manufacture of high performance glass sheets by the fusion process, including glass sheets which are incompatible with zircon isopipes but compatible with alumina isopipes, e.g., chip and scratch resistant glass sheets which have high alkali contents.