MAGNETIC DISK SUBSTRATE, MAGNETIC DISK, ANNULAR-SHAPED SUBSTRATE, AND METHOD FOR MANUFACTURING MAGNETIC DISK SUBSTRATE
本页收录老挝专利「MAGNETIC DISK SUBSTRATE, MAGNETIC DISK, ANNULAR-SHAPED SUBSTRATE, AND METHOD FOR MANUFACTURING MAGNETIC DISK SUBSTRATE」的公开登记要点，由 HOYA CORPORATION 于 2022-02-24 提交申请，当前状态为等待形式审查。关键编号与类型标注为 申请号 P/921 / DIP 编号 LAP921 / 主管局代码 LA / 保护类型 Patent - PCT National Phase。时间线要点：公开/公告日 2026-04-10。国际分类 / IPC 标注为 B24B 1/00、B24B 9/00、C03C 19/00、G11B 5/73、G11B 5/84。发明人 / 设计人包括 Shuhei、Toshio TAKIZAWA。代理机构 / 代理人记载为 Tilleke & Gibbins Lao Co., Ltd。公开摘要提示：A magnetic disk substrate according to an embodiment includes two main surfaces and an outer circumferential edge surface. In the magnetic'…。
P/921
图样
基础信息
- 类型
- 专利
- 申请号
P/921- 状态
- 等待形式审查
- 申请人
- HOYA CORPORATION
- 代理机构
- Tilleke & Gibbins Lao Co., Ltd
- 申请日期
- 2022-02-24
- 公开 / 公告日
- 2026-04-10
- 保护类型
- Patent - PCT National Phase
- 国际分类
- B24B 1/00 · B24B 9/00 · C03C 19/00 · G11B 5/73 · G11B 5/84
- 商品 / 服务
- —
办理流程
根据当前状态动态标注-
提交申请
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形式审查 进行中
-
实质审查
-
公开
-
授权
关联分析
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摘要
A magnetic disk substrate according to an embodiment includes two main surfaces and an outer circumferential edge surface. In the magnetic'disk substrate, the outer circumferential edge surface includes two chamfered surfaces that are respectively connected to the main surfaces, and a side wall surface that is curved and extends to protrude outward between the two chamfered surfaces. The side wall surface has a radius of curvature of 1100 Irm or more on a cross'section of the magnetic-disk substrate extending along a plate thickness direction of the magnetic-disk substrate.
A magnetic disk substrate according to an embodiment includes two main surfaces and an outer circumferential edge surface. In the magnetic'disk substrate, the outer circumferential edge surface includes two chamfered surfaces that are respectively connected to the main surfaces, and a side wall surface that is curved and extends to protrude outward between the two chamfered surfaces. The side wall surface has a radius of curvature of 1100 Irm or more on a cross'section of the magnetic-disk substrate extending along a plate thickness direction of the magnetic-disk substrate.
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