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:
Dec. 11, 1990
Filed:
Oct. 04, 1989
Applicant:
Inventors:
Weyman H Dunaway, Sandersville, GA (US);
Lev F Verbov, Milledgeville, GA (US);
Assignee:
ECC America Inc., Atlanta, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
106416 ; 106485 ; 106486 ; 106488 ; 501144 ; 501147 ;
Abstract
A method for forming a hydrothermally aggregated kaolin clay pigment, comprising preparing an aqueous slurry of particulate kaolin clay and sodium aluminate, having a total solids concentration of from about 2 to 25% by weight, the weight ratio between kaolin and aluminate being greater than 1; and hydrothermally treating the slurry in a closed system to form aggregates of adherent kaolin platelets.