Sony Assigned Patent

Sony Corporation, Tokyo, Japan, has been assigned a patent (11508407) developed by Sekiguchi, Noboru, Yamaga, and Minoru, Miyagi, Japan, for a “magnetic recording medium having controlled dimensional characteristics.“

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-like shape and includes a base substrate and a magnetic layer provided on the base substrate. A plurality of data tracks can be formed in the magnetic layer, a width of a data track is 2900 nm or less, and in a case of defining, as w.sub.max and w.sub.min, a maximum value and a minimum value respectively out of average values of a width of the magnetic recording medium measured under four kinds of environment in which temperature and relative humidity are set to (10° C., 10%), (10° C., 80%), (29° C., 80%), and (45° C., 10%), w.sub.max and w.sub.min satisfy a relation of (w.sub.max−w.sub.min)/w.sub.min≤400 [ppm].”

The patent application was filed on 2018-11-26 (16/474437).