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. 15, 1993
Filed:
Sep. 16, 1991
Applicant:
Inventors:
Satish K Wason, Bel Air, MD (US);
Michael C Withiam, Elkton, MD (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; C09C / ; D21H / ; D21H / ;
U.S. Cl.
CPC ...
428403 ; 106461 ; 106466 ; 106469 ; 106482 ; 106486 ; 1621811 ; 1621816 ; 1621817 ; 428404 ;
Abstract
A composite pigment product useful as a paper filler pigment comprises a substantially inert mineral nucleus coated with a substantially continuous uniform coating of an active paper pigment. The active paper pigment coating is preferably formed in situ under alkaline conditions.