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:
Nov. 18, 2008
Filed:
Nov. 02, 2005
Richard L. Hansen, Mentor, OH (US);
Theodore P. Kircher, Ashtabula, OH (US);
Douglas M. Korwin, Copley, OH (US);
Richard L. Hansen, Mentor, OH (US);
Theodore P. Kircher, Ashtabula, OH (US);
Douglas M. Korwin, Copley, OH (US);
Momentive Performance Materials Inc., Albany, NY (US);
Abstract
A process for producing a synthetic quartz glass powder which is substantially free of carbon contaminant, for reduced bubble density and improved stability of articles made from the synthetic quartz glass during fusion molding by maintaining the synthetic silica powder in an oxidizing environment, e.g., an atmosphere comprising at least 3 vol. % ozone at a temperature of less than 1400° C., causing carbon containing compounds to be reduced to less than 10 ppm.