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:
Apr. 05, 2016
Filed:
Apr. 23, 2012
Shimpei Komatsu, Kagawa, JP;
Yuki Noda, Kagawa, JP;
Mitsuhiro Wada, Kagawa, JP;
Akira Hashino, Kagawa, JP;
Hideyuki Kinoshita, Kagawa, JP;
Masashi Nakashita, Kagawa, JP;
Ichiro Wada, Kagawa, JP;
Shimpei Komatsu, Kagawa, JP;
Yuki Noda, Kagawa, JP;
Mitsuhiro Wada, Kagawa, JP;
Akira Hashino, Kagawa, JP;
Hideyuki Kinoshita, Kagawa, JP;
Masashi Nakashita, Kagawa, JP;
Ichiro Wada, Kagawa, JP;
UNICHARM CORPORATION, Ehime, JP;
Abstract
An absorbent article includes a liquid-permeable top sheet, a liquid-impermeable back sheet, and an absorbent body between the liquid-permeable top sheet and liquid-impermeable back sheet. The top sheet exhibits a color difference in a range of 37-80, based on the L*a*b* color system and measured from a skin contact surface of the top sheet in a liquid dropping test. Further, the top sheet has a color-reducing agent having an IOB of 0.00-0.35, a melting point of no higher than 45° C. and a water solubility of 0.00-0.05 g in 100 g of water at 25° C. The absorbent article is configured to allow a user to visually confirm reduction in residue of highly viscous menstrual blood on the top sheet after its absorption, thereby providing reassurance to the user.