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. 29, 2010
Filed:
Aug. 27, 2003
Applicants:
Kazuo Kubota, Wakayama, JP;
Zenbei Meiwa, Wakayama, JP;
Hiromichi Takahashi, Wakayama, JP;
Yoshihiro Hasebe, Wakayama, JP;
Inventors:
Kazuo Kubota, Wakayama, JP;
Zenbei Meiwa, Wakayama, JP;
Hiromichi Takahashi, Wakayama, JP;
Yoshihiro Hasebe, Wakayama, JP;
Assignee:
Kao Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21H 17/29 (2006.01); D21H 17/42 (2006.01); D21H 21/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
An additive for internal addition, which improves the paper qualities of a pulp sheet, such as stiffness and bulk which includes a polymer emulsion containing a natural cationic polymer (A) or synthetic cationic polymer (A') and polymer particles (B) containing vinyl monomer-derived structural units.