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. 04, 2012
Filed:
Dec. 10, 2008
Noritomo Nishiura, Otsu, JP;
Koki Ueda, Otsu, JP;
Hidetaka Oda, Otsu, JP;
Tomonori Kano, Otsu, JP;
Daisuke Nagata, Otsu, JP;
Noritomo Nishiura, Otsu, JP;
Koki Ueda, Otsu, JP;
Hidetaka Oda, Otsu, JP;
Tomonori Kano, Otsu, JP;
Daisuke Nagata, Otsu, JP;
Nippon Electric Glass Co., Ltd., Shiga, JP;
Abstract
A process produces a glass sheet. The process includes down-drawing a molten glass into a sheet-like glass ribbon, in which the molten glass is fed to a forming trough arranged in a forming furnace and the molten glass is caused to flow down from the forming trough through a conveyance passage extending vertically. The process also includes removing an internal strain in the glass ribbon in an annealing furnace, cooling the glass ribbon to around room temperature, and cutting the glass ribbon in a given size, in which a pressure in an outside atmosphere of the forming furnace and/or the annealing furnace is elevated.