US Patent Issued to Comadur on Aug. 12 for "Monocristalline type mineral stone equipped with a cone for centring a pivot, and manufacturing method thereof" (French, Swiss Inventors)

ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,386,314, issued on Aug. 12, was assigned to Comadur SA (Le Locle, Switzerland).

"Monocristalline type mineral stone equipped with a cone for centring a pivot, and manufacturing method thereof" was invented by Bruno Besutti (Charquemont, France), Sebastien Retrouvey (Chissey sur Loue, France) and Pierry Vuille (Les Emibois, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for manufacturing a stone for a timepiece from a mineral body of a monocrystalline type, the stone including a hole, includes ablating the body by scanning at least one face of the body with ultra-short pulse laser radiation from a laser for a duration less than one h...