ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,400,682, issued on Aug. 26, was assigned to Sony Group Corp. (Tokyo).
"Magnetic recording medium and cartridge" was invented by Noboru Sekiguchi (Tokyo) and Minoru Yamaga (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a magnetic recording medium capable of curbing deterioration in electromagnetic conversion characteristics.A magnetic recording medium with a tape shape includes a substrate that contains polyesters, an underlayer that is provided on the substrate, and a magnetic layer that is provided on the underlayer and contains a magnetic powder. The magnetic recording medium contains a lubricant. An average value of arithmetic aver...