ALEXANDRIA, Va., June 4 -- United States Patent no. 12,317,996, issued on June 3, was assigned to Daifuku Co. Ltd. (Osaka, Japan).

"Assembly shelf" was invented by Yukiya Kinoshita (Shiga, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An assembly shelf is configured by stacking a second shelf unit on a first shelf unit. An upper surface of at least one first horizontal frame member which is disposed in an upper part of the first shelf unit and a lower surface of at least one second horizontal frame member which is disposed in a lower part of the second shelf unit are respectively provided with engagement structures that engage with each other."

The patent was filed on Sept. 5, 2023, under Application...