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:
Dec. 20, 2011
Filed:
Sep. 26, 2007
Kensaku Uchida, Tokyo, JP;
Ikuo Kubota, Tokyo, JP;
Hideyuki Ishiguro, Tokyo, JP;
Nobuyuki Kamishioiri, Tochigi, JP;
Kensaku Uchida, Tokyo, JP;
Ikuo Kubota, Tokyo, JP;
Hideyuki Ishiguro, Tokyo, JP;
Nobuyuki Kamishioiri, Tochigi, JP;
Kao Corporation, Tokyo, JP;
Abstract
A wetness indicator composition contains (a) 0.1% to 5% by weight of a pH indicator that is substantially colorless at pH 7 and develops a color in an acidic environment, (b) 20% to 90% by weight of a surfactant, (c) 5% to 55% by weight of a polyalkylene glycol, (d) 0% to 70% by weight of a polymer having a carboxyl group, and (e) 0.1% to 5% by weight of an acidic substance other than components (b) and (d). In an absorbent article including a topsheet, a backsheet, and an absorbent memberinterposed between the topsheetand the backsheetand having applied thereon a hot-melt composition that changes color on contact with a body fluid, the wetness indicator composition is used as the hot melt composition.