ALEXANDRIA, Va., May 12 -- United States Patent no. 12,622,542, issued on May 12, was assigned to TBDx Inc. (Alamo, Calif.).

"Automatically adjustable coffee grinder for a coffee brewing system" was invented by Qiliang Xu (Alamo, Calif.) and Rui Zhou (Sunnyvale, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A grinder for grinding whole coffee beans into coffee grounds with automatically adjustable coarseness. The grinder comprise a burr assembly for grinding whole coffee beans, which comprises an inner burr having a side surface that is slanted and abrasive or serrated, and an outer burr surrounding the inner burr. The side surface of the inner burr and the outer burr define a gap. The grinder compri...