ALEXANDRIA, Va., June 9 -- United States Patent no. 12,649,614, issued on June 9, was assigned to Frank Forster (Lucerne, Switzerland).

"Closing device for a container" was invented by Frank Forster (Lucerne, Switzerland) and Francesco Catarci (Baar, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "In a method for cooking food in a container, in particular in a bag, the container, during heating, is opened at a particular overpressure of the medium and closed when the overpressure drops. A closing device is connected to the container and equipped with a pressure relief valve by means of which the container is opened at a particular overpressure of the medium and closed when the overpressure drops. ...