ALEXANDRIA, Va., July 30 -- United States Patent no. 12,370,119, issued on July 29.

"Warning dome device and manufacture method thereof" was invented by Sydney D Chase (Glendora, Calif.), Larry Harden (Glendora, Calif.) and Rolance Mehserdjian (Glendora, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A patterned warning mat according to the present disclosure having a base and a plurality of domes and patterns formed on the base. The warning mat is obtained by a process comprising the steps of providing an open-face mold having a plurality of textures and a plurality of dome indentations, preparing a liquid mixture capable of solidifying, pouring the mixture over the open-face mold, and allowing the m...