ALEXANDRIA, Va., June 17 -- United States Patent no. 12,312,146, issued on May 27, was assigned to Micvac AB (Molndal, Sweden).
"One-way valve for food packages" was invented by Robert Albino (Gothenburg, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "A one-way valve for mounting over an aperture formed on a food package for cooking, storing and/or heating of ready-to-eat food is disclosed. The one-way valve comprises a first membrane comprising a top surface and a bottom surface, where the bottom surface is adapted to be fixed to the food package. The one-way valve further comprises a second membrane comprising an upper surface and a lower surface. The lower surface of the second membrane is adhered ...