Invention Grant
- Patent Title: Glass spacer, hard disk drive apparatus, and method for manufacturing glass spacer
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Application No.: US16641399Application Date: 2019-01-31
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Publication No.: US11031038B2Publication Date: 2021-06-08
- 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: JPJP2018-234741 20181214
- International Application: PCT/JP2019/003533 WO 20190131
- International Announcement: WO2019/151459 WO 20190808
- Main IPC: G11B17/32
- IPC: G11B17/32 ; G11B5/73 ; G11B17/038 ; G11B33/12
Abstract:
A glass material of a glass spacer has a surface resistivity of 103 to 109 (Ω/sq) at 22 (° C.). The surface resistivity of a surface of the glass material of the glass spacer at 22 (° C.) is lower than the surface resistivity of an inner portion of the glass material at 22 (° C.). The glass spacer contains at least one oxide selected from the group consisting of TiO2, Nb2O5, WO3, and Bi2O3, as a glass component.
Public/Granted literature
- US20200227087A1 GLASS SPACER, HARD DISK DRIVE APPARATUS, AND METHOD FOR MANUFACTURING GLASS SPACER Public/Granted day:2020-07-16
Information query
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