专利 已注册

SUBSTRATE FOR MAGNETIC DISKS, AND MAGNETIC DISK

Overview

This Laos Patent “SUBSTRATE FOR MAGNETIC DISKS, AND MAGNETIC DISK” is a public DIP intellectual-property record, filed by HOYA CORPORATION on 2018-07-02; current status: Registered. Identifiers include application No. P/684; DIP id LAP684; protection kind Patent - PCT National Phase. Key dates: publication 2022-10-07; grant 2022-10-04; expiry reference 2038-07-02. Classification: G11B 5/73. Inventor(s)/designer(s): OSAKABE Kinobu. Abstract hint: This substrate for magnetic disks is provided with: a substrate main body having two main surfaces; and films of a material having a loss c…. Use LaoBiz to hop between this IP record, related filings by the same applicant, and the matched company profile when present.

专利 老挝 DIP

申请号 P/684
申请日期 2018-07-02
注册/授权日 2022-10-04
申请人 HOYA CORPORATION
代理机构 Tilleke & Gibbins International Ltd
类别 G11B 5/73

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基础信息

类型
专利
申请号
P/684
状态
已注册
申请人
HOYA CORPORATION
代理机构
Tilleke & Gibbins International Ltd
申请日期
2018-07-02
注册号
P/684
公开/公告日
2022-10-07
注册/授权日
2022-10-04
届满日
2038-07-02
国际分类
G11B 5/73
商品 / 服务
—

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摘要

This substrate for magnetic disks is provided with: a substrate main body having two main surfaces; and films of a material having a loss coefficient of 0.1 or more, said films being arranged on the main surfaces. The thickness T of this substrate for magnetic disks including the films is 0.700 mm or less; and the thickness D (mm) of the films, which are arranged on the main surfaces, and the thickness T (mm) of this substrate for magnetic disks including the films satisfy the relational expression D ≥ 0.0082/T - 0.0015.

This substrate for magnetic disks is provided with: a substrate main body having two main surfaces; and films of a material having a loss coefficient of 0.1 or more, said films being arranged on the main surfaces. The thickness T of this substrate for magnetic disks including the films is 0.700 mm or less; and the thickness D (mm) of the films, which are arranged on the main surfaces, and the thickness T (mm) of this substrate for magnetic disks including the films satisfy the relational expression D ≥ 0.0082/T - 0.0015.

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