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. 09, 2015
Filed:
Feb. 24, 2011
Dawid Dewet-smith, Perrysburg, OH (US);
Carl L. Fayerweather, Maumee, OH (US);
Brett E. Hixson, Adrian, MI (US);
Dawid Dewet-Smith, Perrysburg, OH (US);
Carl L. Fayerweather, Maumee, OH (US);
Brett E. Hixson, Adrian, MI (US);
Owens-Brockway Glass Container Inc., Perrysburg, OH (US);
Abstract
A process for making soda-lime glass includes calcining calcium carbonate in solid phase and at elevated temperature to form calcium oxide in solid phase and carbon dioxide gas. Sodium silicate glass is formed and refined separately in liquid phase. The solid phase calcium oxide is dissolved in the refined liquid phase sodium silicate glass to form a soda-lime glass melt. Formation of sodium silicate glass as an intermediate product before mixing with calcium oxide has the advantage of promoting release of gaseous reaction products from the sodium silicate glass during the refining step due at least in part to the relatively low viscosity of the sodium silicate glass. One or more steps in the process can be carried out under reduced pressure to promote release of gases and to reduce bubble formation.