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:
Jun. 02, 2020
Filed:
Jul. 07, 2016
Kao Corporation, Tokyo, JP;
Kao Corporation, Tokyo, JP;
Abstract
An exothermic warmer () includes an exothermic element () that is covered with a first cover sheet () and a second cover sheet (). The first cover sheet () is a sheet that is air permeable and does not substantially limit an oxidation reaction. A water-retaining material () is provided so as to be at least partially in contact with the exothermic element (). The exothermic warmer () satisfies the following conditions (A) to (C): (A) the difference between the internal temperature of the exothermic element and the highest surface temperature of the exothermic warmer is 10° C. or less; (B) the highest skin temperature obtained when the exothermic warmer is applied to human skin is 38° C. or more and 42° C. or less; and (C) the ratio of the amount (mg/cm·10 min) of steam generated in 10 minutes after the start of the oxidation reaction to the mass (g/cm) of the exothermic element takes a value of 50 or more and 250 or less.