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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.:

US 9724249 B1

PDFFull Text
Date of Patent:
Aug. 08, 2017

Filed:

Aug. 14, 2013

Absorbent article

Applicant:

Unicharm Corporation, Ehime, JP;

Inventors:

Ichiro Wada, Kanonji, JP;

Masashi Nakashita, Kanonji, JP;

Masashi Uda, Kanonji, JP;

Assignee:

UNICHARM CORPORATION, Ehime, JP;

Attorney:

Hauptman Ham, LLP

Primary Examiner:

Lynne Anderson

Int. Cl.
CPC ...
A61F 13/51 (2006.01); A61F 13/84 (2006.01); A61F 13/511 (2006.01); A61F 13/15 (2006.01); A61L 15/50 (2006.01); A61L 15/20 (2006.01);
U.S. Cl.
CPC ...
A61F 13/51113 (2013.01); A61F 13/15707 (2013.01); A61F 13/5116 (2013.01); A61F 13/51104 (2013.01); A61L 15/20 (2013.01); A61L 15/50 (2013.01); A61F 2013/51016 (2013.01); A61F 2013/51066 (2013.01); A61F 2013/51073 (2013.01); A61F 2013/8455 (2013.01);
Abstract

The present invention addresses the problem of providing an absorbent article that has an improved ability to transfer menstrual blood from a liquid-permeable layer to an absorbent body and can reduce the amount of the menstrual blood remaining in the liquid-permeable layer. To solve this problem, provided is a sanitary napkin provided with a top sheet, a back sheet and an absorbent body that is interposed between the top sheet and the back sheet, wherein convex portions formed in an excretion orifice contact region of the top sheet are coated with a blood lubricity-imparting agent that has a kinetic viscosity of 0.01-80 mm/s at 40° C., a water retention rate of 0.01-4.0 mass % and a weight-average molecular weight of less than 1,000.

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