Hoya Assigned Patent

Hoya Corporation, Tokyo, Japan, has been assigned a patent (11,244,706) developed by Takano, Masao, Akishima, Japan, and Eda, Shinji, Hung Yen Province, Vietnam, for “glass spacer and hard disk drive apparatus.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “In order to suppress the occurrence of adhesion between magnetic disks and spacers when the magnetic disks and the spacers are removed from a hard disk drive apparatus in which the magnetic disks and the spacers are installed, a surface roughness Ra of a main surface of a ring-shaped glass spacer to be arranged in contact with a magnetic disk is set to be not larger than 1.0 .mu.m, and an average inclination R.DELTA.a of the main surface is set to be at least 0.02.”

The patent application was filed on August 28, 2020 (17/006,733)