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:
Feb. 27, 2001
Filed:
Sep. 14, 1999
Applicant:
Inventors:
John R. McLaughlin, Media, PA (US);
Paul G. Linsen, West Chester, PA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21H 1/768 ; D21H 2/110 ;
U.S. Cl.
CPC ...
D21H 1/768 ; D21H 2/110 ;
Abstract
A microparticle composition for paper making includes finely divided particles of a water insoluble solid such as amorphous sodium aluminosilicate, and having an anionic charge of at least 20 millivolts, and preferably from about 40 to 60 millivolts, and a particle size of less than about 0.1 microns.