ALEXANDRIA, Va., June 16 -- United States Patent no. 12,305,910, issued on May 20, was assigned to PHC Holdings Corp. (Tokyo).
"Refrigeration apparatus" was invented by Tadashi Okada (Saitama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A refrigeration apparatus performs refrigeration by freezing circuitry using refrigerant. The refrigeration apparatus includes: an inner door that is provided with a thermal insulation material inside; a case section that includes a peripheral edge section facing a perimeter section of the inner door while the inner door is closed, and that is refrigerated inside by the refrigerant; a packing that is pressed between the perimeter section of the inner door and the per...