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:
Sep. 30, 2008
Filed:
Aug. 27, 2002
Toshiyasu Yoshioka, Kagawa-ken, JP;
Toshiyasu Yoshioka, Kagawa-ken, JP;
Uni-Charm Corporation, Ehime-ken, JP;
Abstract
A disposable diaper includes a liquid-pervious topsheet, a liquid-impervious backsheet, a liquid-absorbent core interposed between these top- and backsheets, and an indicator by which it is perceptible from outside the backsheet whether urination has occurred or not. The indicator has a liquid-pervious intermediate sheet hydrophilically modified by coating of a hydrophobic fibrous nonwoven fabric with surfactant and a water-soluble coloring agent depicting a given figure which is perceptible from outside the backsheet. The intermediate sheet is interposed between the backsheet and the core and the coloring agent is applied on the surface of the intermediate sheet opposed to the backsheet.