ALEXANDRIA, Va., July 30 -- United States Patent no. 12,371,797, issued on July 29.
"Etching a design on a metal surface covered with a pigmented layer" was invented by Adrienne Reisinger (Valencia, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "The system applies a stencil defining a design to a stencil layer including an acid-resistant surface and an adhesive surface. The system adheres the stencil layer to the metal surface covered with the pigmented layer, where the adhesive surface attaches to the metal surface covered with the pigmented layer. The system applies a coat of low-acidity gel formulated to at least partially separate the pigmented layer from the metal surface and to not abrade the ac...