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:
Apr. 02, 1991
Filed:
Mar. 20, 1989
Applicant:
Inventors:
Vikram P Mehrotra, Terre Haute, IN (US);
Ray E Barker, Terre Haute, IN (US);
Assignee:
Pitman-Moore, Inc., Lake Forest, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03B / ;
U.S. Cl.
CPC ...
65 182 ; 65 184 ; 65 215 ; 264 66 ; 264 67 ; 264117 ; 264118 ; 264125 ;
Abstract
High purity fused silica particles are made by heating relatively low density silica flour in a high temperature flame. The silica flour feed rate, flame temperature, and collection zone temperature are adjusted to produce an aggregate of surface-bonded fused silica particles. The aggregate is shaped like a honeycomb and can be ground autogenously without introducing impurities into the final product.