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. 22, 1999
Filed:
May. 15, 1997
Applicant:
Inventors:
Michael C Withiam, Landenberg, PA (US);
Donald P Conley, Conowingo, MD (US);
Assignee:
J.M. Huber Corporation, Edison, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21H / ;
U.S. Cl.
CPC ...
428372 ; 1621811 ; 162182 ; 162183 ; 162185 ;
Abstract
Pigmented paper fibers of improved brightness and light scattering ability are produced by treating the pulp fibers with 0.1 to about 10 wt. % of a silica/alumina sulfate sol composition at a temperature of about 50 to 80.degree. C. and good agitation.