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. 28, 1989
Filed:
Jan. 28, 1988
Applicant:
Inventors:
Rasik H Raythatha, Tennille, GA (US);
E Wayne Andrews, Sandersville, GA (US);
Assignee:
E.C.C. America Inc., Atlanta, GA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ; C04B / ; C09C / ; D21F / ;
U.S. Cl.
CPC ...
106468 ; 106 84 ; 106486 ; 501146 ; 501147 ; 501150 ; 501148 ; 427391 ; 427361 ; 4285375 ; 428688 ; 428446 ; 162135 ; 1621816 ; 1621818 ; 1621817 ; 1621814 ;
Abstract
A process is described in which a structured aggregated kaolin pigment is prepared by mixing substantially dry kaolin in particulate form with an aqueous alkali metal silicate to deposit on the surface of the kaolin particles a substantially molecular level of said silicate without formation of silica gel, drying the treated kaolin without calcination and exposing it to an acidic gas. The product is useful as a pigment in the coating or filling of paper.