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. 03, 1998
Filed:
Apr. 23, 1997
Applicant:
Inventors:
Jeffrey C Bruns, Augusta, GA (US);
Jessica E Kogel, Augusta, GA (US);
Susan A Lewis, Sandersville, GA (US);
Assignee:
Thiele Kaolin Company, Sandersville, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B03B / ; B03B / ; B03B / ; C09C / ;
U.S. Cl.
CPC ...
501141 ; 501146 ; 106486 ; 106488 ; 4231181 ; 423132 ; 209 10 ; 209 11 ;
Abstract
Kaolin clay materials containing discoloring impurities can be beneficiated by microwave irradiation in the presence of water and a polyprotic acid component to produce a beneficiated kaolin clay material having improved color and brightness.