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:
Mar. 07, 1995
Filed:
Dec. 16, 1993
Applicant:
Inventors:
Daniel R Sempolinski, Painted Post, NY (US);
Latha I Swaroop, Painted Post, NY (US);
Assignee:
Corning Incorporated, Corning, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03B / ;
U.S. Cl.
CPC ...
65414 ; 65 6052 ; 6537413 ; 65 174 ; 423336 ;
Abstract
A method of producing a fused silica product comprising introducing a silicon-containing, organometallic compound into a flame to form molten silica particles, and collecting the molten silica particles in a furnace having a crown and cup such that a fused silica product is obtained, wherein at least the furnace crown is formed from a porous, fired, zircon refractory having a sodium ion content of less than 30 ppm. The fused silica product produced by the method has a sodium ion contamination level below 100 parts per billion.