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:
Oct. 07, 1986
Filed:
Feb. 03, 1986
Applicant:
Inventors:
Stephen T Gonczy, Mt. Prospect, IL (US);
Roy T Mitsche, Wauconda, IL (US);
Assignee:
Allied Corporation, Morristown, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C01F / ;
U.S. Cl.
CPC ...
423626 ; 2523131 ; 423627 ;
Abstract
High purity alumina with a low sodium content and with a friable, easily ball milled structure is produced in this invention through a modified sol-gel procedure which includes digestion of the contaminant containing aluminum metal with hydrochloric acid in the presence of excess aluminum, removal of the contaminants, seeding the resulting sol with high purity alumina, drying to a solid, and then calcining said seeded sol solids to produce said high purity alpha alumina.