ALEXANDRIA, Va., June 18 -- United States Patent no. 12,325,658, issued on June 10, was assigned to Luca Toncelli (Bassano del Grappa, Italy).
"Method for manufacturing coloured glass-ceramic slab articles from a base mix, glass frit for manufacturing the base mix and coloured glass-ceramic slab article so obtained" was invented by Luca Toncelli (Bassano del Grappa, Italy).
According to the abstract* released by the U.S. Patent & Trademark Office: "Method for manufacturing coloured glass-ceramic slab articles from a base mix, including the steps of (a) preparing a mix comprising a colouring pigment, at least one binder and a preponderant amount of a glass frit having a specific composition, (b) distributing the mix in a forming support, (...