专利已申请

METHOD FOR MANUFACTURING ANNULAR GLASS PLATE, METHOD FOR MANAFACTURING GLASS SUBSTRATE FOR MAGNETIC DISK, METHOD FOR MANUFACTURING MAGNETIC DISK, ANNULAR GLASS PLATE, GLASS SUBSTE FOR MAGNETIC DISK, AND MANETIC DISK

专利「METHOD FOR MANUFACTURING ANNULAR GLASS PLATE, METHOD FOR MANAFACTURING GLASS SUBSTRATE FOR MAGNETIC DISK, METHOD FOR MANUFACTURING MAGNETIC DISK, ANNULAR GLASS PLATE, GLASS SUBSTE FOR MAGNETIC DISK, AND MANETIC DISK」由 HOYA CORPORATION 持有，当前状态为已申请，申请号 P/822。LaoBiz 老商通提供老挝知识产权信息检索与企业关联查询。

Patent “METHOD FOR MANUFACTURING ANNULAR GLASS PLATE, METHOD FOR MANAFACTURING GLASS SUBSTRATE FOR MAGNETIC DISK, METHOD FOR MANUFACTURING MAGNETIC DISK, ANNULAR GLASS PLATE, GLASS SUBSTE FOR MAGNETIC DISK, AND MANETIC DISK” is held by HOYA CORPORATION; status: 已申请. Search Laos IP records on LaoBiz.

申请号 P/822

申请日期 2020-07-31

申请人 HOYA CORPORATION

代理机构 Tilleke & Gibbins Lao Co.,Ltd

类别 B23K 26/354 · B23K 26/53 · C03B 29/00 · C03B 29/02 · C03B 33/04 · C03B 33/09 · C03C 19/00 · G11B 5/73 · G11B 5/84

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基础信息

类型: 专利
申请号: P/822
状态: 已申请
申请人: HOYA CORPORATION
代理机构: Tilleke & Gibbins Lao Co.,Ltd
申请日期: 2020-07-31
公开/公告日: 2026-02-20
国际分类: B23K 26/354 · B23K 26/53 · C03B 29/00 · C03B 29/02 · C03B 33/04 · C03B 33/09 · 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 2020-07-31
形式审查 进行中
实质审查
公开 2026-02-20
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摘要

A method for manufacturing an annular glass plate that has an outer

circumferential edge surface, an inner circumferential edge surface, and a

thickness not larger than 0.6 mm includes processing for manufacturing an

annular glass plate by irradiating each of the outer circumferential edge surface

and the inner circumferential edge surface of an annular glass blank with a laser

beam to melt the outer circumferential edge surface and the inner

circumferential edge surface and form molten surfaces such that the molten

surfaces in the outer circumferential edge surface and the inner circumferential

edge surface each have an arithmetic average surface roughness Ra not larger

than 0.1 μm, and the surface roughness of the molten surface in the inner

circumferential edge surface becomes larger than the surface roughness of the

molten surface in the outer circumferential edge surface.

A method for manufacturing an annular glass plate that has an outer

circumferential edge surface, an inner circumferential edge surface, and a

thickness not larger than 0.6 mm includes processing for manufacturing an

annular glass plate by irradiating each of the outer circumferential edge surface

and the inner circumferential edge surface of an annular glass blank with a laser

beam to melt the outer circumferential edge surface and the inner

circumferential edge surface and form molten surfaces such that the molten

surfaces in the outer circumferential edge surface and the inner circumferential

edge surface each have an arithmetic average surface roughness Ra not larger

than 0.1 μm, and the surface roughness of the molten surface in the inner

circumferential edge surface becomes larger than the surface roughness of the

molten surface in the outer circumferential edge surface.