Glass spacer, hard disk drive apparatus, and method for manufacturing glass spacer
US11031038B2 · kind B2 · utility
1Cited by
1References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 31, 2019 |
| Grant date | Jun 8, 2021 |
| Priority date | — |
| Expiry date | Jan 31, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/125
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.