Invention Grant
- Patent Title: Glass spacer, hard disk drive apparatus, and method for manufacturing glass spacer
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Application No.: US17315109Application Date: 2021-05-07
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Publication No.: US11682425B2Publication Date: 2023-06-20
- Inventor: Shinji Eda , Kinobu Osakabe , Yoshitake Tanno , Mikio Ikenishi
- Applicant: HOYA CORPORATION
- Applicant Address: JP Tokyo
- Assignee: HOYA CORPORATION
- Current Assignee: HOYA CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Global IP Counselors, LLP
- Priority: JP 18234741 2018.12.14
- The original application number of the division: US16641399
- Main IPC: G11B17/02
- IPC: G11B17/02 ; G11B17/038 ; G11B25/04 ; G11B33/14 ; G11B5/73 ; G11B17/32 ; G11B33/12
Abstract:
A ring-shaped glass spacer is configured to be arranged in contact with a magnetic disk in a hard disk drive apparatus. A surface resistivity of a surface of a glass material of the glass spacer at 22 (° C.) is lower than a surface resistivity of an inner portion of the glass material at 22 (° C.).
Public/Granted literature
- US20210264946A1 GLASS SPACER, HARD DISK DRIVE APPARATUS, AND METHOD FOR MANUFACTURING GLASS SPACER Public/Granted day:2021-08-26
Information query
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