Glass spacer, hard disk drive apparatus, and method for manufacturing glass spacer
US11682425B2 · kind B2 · utility
0Cited by
10References
20Claims
0Family size
Assignee
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Key dates
| Filing date | May 7, 2021 |
| Grant date | Jun 20, 2023 |
| Priority date | — |
| Expiry date | May 7, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/125
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.