US Patent Issued to HOYA, HOYA GLASS DISK VIETNAM II on Jan. 27 for "Method for manufacturing magnetic disk, magnetic disk, and magnetic disk precursor" (Null, American Inventors)

ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,537,025, issued on Jan. 27, was assigned to HOYA Corp. (Tokyo) and HOYA GLASS DISK VIETNAM II LTD. (Hung Yen Province, Viet Nam).

"Method for manufacturing magnetic disk, magnetic disk, and magnetic disk precursor" was invented by Shinji Eda (Yen My, Viet Nam) and Kenichi Nishimori (Milpitas, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A magnetic disk used in a hard disk drive device includes a substrate; a magnetic recording layer; and a heat insulating layer provided between the substrate and the magnetic recording layer. Even though a substrate has low heat resistance, as a result of providing the heat insulating layer, the substrate can be...