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:
Aug. 17, 1999
Filed:
Jul. 11, 1997
Applicant:
Inventors:
Assignee:
Engelhard Corporation, Iselin, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C09C / ; B03B / ;
U.S. Cl.
CPC ...
106487 ; 106416 ; 106486 ; 106488 ; 501146 ; 209-5 ; 209 10 ; 209172 ;
Abstract
This invention pertains to the use of a combination of polyvalent cations, clay dispersant and high molecular weight anionic polymer to preferentially remove colloidal fines (slimes) from a kaolin slurry, leaving the remainder of the kaolin in the slurry in the form of a coherent gelatinous mass.