ALEXANDRIA, Va., April 7 -- United States Patent no. 12,593,936, issued on April 7.
"Multifunctional microwave baking tray" was invented by Huamin Peng (Foshan, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A multifunctional microwave baking tray includes a tray body, an upper cover and a microwave absorbing layer; an outer edge of the upper cover is wrapped with a protective casing, and has an axisymmetric outline having at least two symmetric axes; first protrusions are arranged on a side wall of an inner chamber of the tray body; the outer edge of the upper cover is provided with grooves matched with the first protrusions; when the grooves are aligned with the first protrusions, the grooves move ov...