ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,502,025, issued on Dec. 23.
"Food heating mat and production process thereof" was invented by Guocai Rao (Guangdong, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed are a food heating mat and a production process thereof. A silica gel plate provided with a first U-shaped groove is formed by heat press molding and vulcanization, a heating wire is pressed into the first U-shaped groove, a limiting section of the first U-shaped groove is capable of preventing the heating wire from easily detaching therefrom, and then glue is injected for fixing. The food heating mat is structurally simple and features a high yield rate despite of a simple pr...