 Leptat glass is a glass that has been etched using a patented acid process.Lestat takes its name from the Czech word meaning "to etch", because the technique was inspired by a Bohemian, Czech Republic (former Czechoslovakian) glass exhibit viewed at a past World's Fair in Osaka, Japan, and patented in the United States by Bernard E. Gruenke, Jr. of the Conrad Schmitt Studios.Abstract, figural, contemporary, and traditional designs have been executed in Leptat glass.