ALEXANDRIA, Va., June 4 -- United States Patent no. 12,317,972, issued on June 3.
"Thermochromic necklace pendant" was invented by Darryl Merideth (Baton Rouge, La.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A thermochromic necklace pendant includes a pendant frame, a mirror, and thermochromic material. The pendant frame includes a transparent or translucent material. The pendant frame includes an outer border portion and a central mounting portion. The mirror is mounted on the central mounting portion and within the outer border portion. The outer border portion is hollow. The thermochromic material is positioned in the outer border portion and designed to change colors in response to temperature to cre...