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. 02, 2020
Filed:
Sep. 30, 2016
Applicant:
Ecolab Usa Inc., St. Paul, MN (US);
Inventor:
Qinglong Rao, Shanghai, CN;
Assignee:
Ecolab USA Inc., St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H 17/00 (2006.01); D21H 17/37 (2006.01); D21H 17/69 (2006.01); D21H 17/29 (2006.01); D21H 17/28 (2006.01); D21H 21/18 (2006.01); D21H 17/67 (2006.01); D21H 17/43 (2006.01); D21H 17/45 (2006.01); D21H 17/68 (2006.01);
U.S. Cl.
CPC ...
D21H 17/69 (2013.01); D21H 17/28 (2013.01); D21H 17/29 (2013.01); D21H 17/37 (2013.01); D21H 17/375 (2013.01); D21H 17/43 (2013.01); D21H 17/455 (2013.01); D21H 17/67 (2013.01); D21H 17/675 (2013.01); D21H 17/68 (2013.01); D21H 17/74 (2013.01); D21H 21/18 (2013.01);
Abstract
Method of papermaking comprises: treating filler with a starch and a flocculant to form a filler floc; combining the filler floc with the cellulose fiber stock; and forming a paper mat from the combination of filler floc and cellulose fiber stock. The method have been found to result in larger particle sizes for the filler flocs, improved shear stability, and improved sheet strength in the paper mat.