Sony Group Assigned Patent

Sony Group Corporation, Tokyo, Japan, has been assigned a patent (11854585) developed by Sekiguchi, Noboru, Kamoshita, Yuuko, and Yamaga, Minoru, Tokyo, Japan, for “magnetic recording medium and cartridge.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A magnetic recording medium is a magnetic recording medium having a tape shape and includes a substrate, an underlayer provided on the substrate, and a magnetic layer provided on the underlayer. The magnetic layer has a surface having an uneven shape, a height range ΔH obtained from statistical information of a height of the uneven shape is in a range of 4.00 nm≤ΔH≤10.00 nm, and a gradient range ΔA obtained from statistical information of a gradient of the uneven shape is in a range of 2.50 degrees ≤ΔA.”

The patent application was filed on 2021-01-19 (17/790298).