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:
Nov. 21, 2000
Filed:
May. 21, 1998
Applicant:
Inventors:
Katsuyuki Wada, Himeji, JP;
Naoko Takahashi, Himeji, JP;
Hiroko Ueda, Himeji, JP;
Kinya Nagasuna, Himeji, JP;
Assignee:
Nippon Shokubai Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61F / ;
U.S. Cl.
CPC ...
604372 ; 604358 ; 604367 ; 6043851 ; 604368 ; 604375 ;
Abstract
The invention clarifies absorption properties of a water-absorbent resin as needed in the case where the ratio by weight of the water-absorbent resin to the total of the water-absorbent resin and the fibrous material is '.alpha.,' and further the invention provides an absorbent article using a water-absorbent resin which is optimal to the ratio by weight '.alpha.' of the water-absorbent resin. A water-absorbent resin, having a concentration absorption index of 35 or more as shown by the following equation (1):