ALEXANDRIA, Va., June 9 -- United States Patent no. 12,286,262, issued on April 29, was assigned to ReViSalt GmbH (Freiberg, Germany).
"Glass vessel" was invented by Thomas Voland (Grossweitzchen, Germany), Sabine Honig (Dittmannsdorf, Germany), Martin Gross (Pockau-Legefeld, Germany) and Michael Heidan (Dietzenbach, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a glass vessel having at least one wall and manufactured from a base material which is an alkali-containing silicate glass. It is a feature of the glass vessel that at least a surface layer is enriched in potassium and depleted of sodium and/or lithium, while an inner layer, especially one directly adjoining the surf...