US 12,343,281 B2
Heating implement
Yasuhiro Shidahara, Sumida-ku (JP)
Assigned to Kao Corporation, Tokyo (JP)
Appl. No. 17/996,811
Filed by Kao Corporation, Tokyo (JP)
PCT Filed Feb. 15, 2021, PCT No. PCT/JP2021/005438
§ 371(c)(1), (2) Date Oct. 21, 2022,
PCT Pub. No. WO2021/215089, PCT Pub. Date Oct. 28, 2021.
Claims priority of application No. PCT/JP2020/017724 (WO), filed on Apr. 24, 2020.
Prior Publication US 2023/0201028 A1, Jun. 29, 2023
Int. Cl. A61F 9/00 (2006.01); A61F 7/03 (2006.01); A61F 9/04 (2006.01); A61F 7/00 (2006.01); A61F 7/02 (2006.01)
CPC A61F 7/034 (2013.01) [A61F 9/04 (2013.01); A61F 2007/0004 (2013.01); A61F 2007/0088 (2013.01); A61F 2007/0244 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A warming device comprising a heat generating element that contains a powder of an oxidizable metal, a powder of a carbon material, water, and a powder of a porous material other than the oxidizable metal and the carbon material,
wherein the heat generating element is a sheet material, and
in the heat generating element, a ratio of the mass content of the water to the mass content of the powder of the oxidizable metal multiplied by one hundred [100×(water/powder of oxidizable metal)] is from 30 to 270.