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:
Jun. 21, 1988
Filed:
Jun. 01, 1987
Applicant:
Inventor:
Steven L Rock, Doylestown, PA (US);
Assignee:
PQ Corporation, Valley Forge, PA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09C / ;
U.S. Cl.
CPC ...
106300 ; 423328 ;
Abstract
Zeolite of a small controlled particle size has been found to be a pigment component to be used with TiO.sub.2 in papermaking. Zeolite A wherein the sodium has been at least partially replaced with calcium and/or hydronium ion is widely useful with TiO.sub.2 in papermaking.