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. 03, 2014
Filed:
Dec. 24, 2009
Applicants:
Takashi Fujimura, Tokyo, JP;
Hidenobu Ishida, Tokyo, JP;
Inventors:
Takashi Fujimura, Tokyo, JP;
Hidenobu Ishida, Tokyo, JP;
Assignee:
San-Dia Polymers, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08F 8/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
There is provided an absorbent resin particle having an absorption rate pattern where the rate is slow in the initial stage, moderate in the middle stage, and fast in the late stage, and there is also provided an absorbent article free from problems such as skin irritation by using the absorbent resin particle. The present invention relates to an absorbent resin particle comprising a crosslinked polymer (A1) including, as an essential constituent unit, a water-soluble vinyl monomer (a1) and/or a hydrolyzable vinyl monomer (a2), and a crosslinking agent (b),