Hoya Assigned Patent

Hoya Corporation, Tokyo, Japan, has been assigned a patent (12183365) developed by Miura; Masafumi, Chaing Mai Province, Thailand, Hashimoto; Kazuaki, Akiruno, Japan, and Higuchi; Naoyuki, Kokubunji, Japan, for “glass spacer and hard disk drive device.“

The abstract of the patent published by the U.S. Patent and Trademark Office states: “A ring-shaped glass spacer is to be arranged in contact with a magnetic disk in a hard disk drive device. A film that contains at least one of tin oxide, zinc oxide, and titanium oxide is formed on each surface of a main surface, and an outer circumferential edge surface, and an inner circumferential edge surface of the glass spacer. The thickness of the film on a center portion of the outer circumferential edge surface of the glass spacer is larger than the thickness of the film on a center portion of the inner circumferential edge surface of the glass spacer.”

The patent application was filed on 2023-10-25 (18/494381).