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专利 已注册

Non-Magnetic Substrate For Magnetic Disk, And Magnetic Disk

Overview

This Laos Patent “Non-Magnetic Substrate For Magnetic Disk, And Magnetic Disk” is a public DIP intellectual-property record, filed by HOYA CORPORATION on 2018-04-02; current status: Registered. Identifiers include application No. P/855; DIP id LAP855; protection kind Patent - PCT National Phase. Key dates: publication 2026-01-23; grant 2025-04-22; expiry reference 2038-04-02. Classification: G11B 5/73、G11B 5/738、G11B 5/84. Inventor(s)/designer(s): Kinobu OSAKABE. Abstract hint: A non-magnetic substrate for a magnetic disk includes a substrate main body having two opposing main surfaces, the substrate main body made…. Status labels may change after office actions; refresh or consult primary DIP data before commercial decisions.

专利 老挝 DIP

申请号 P/855
申请日期 2018-04-02
注册/授权日 2025-04-22
申请人 HOYA CORPORATION
代理机构 Tilleke & Gibbins Lao Co., Ltd
类别 G11B 5/73 · G11B 5/738 · G11B 5/84

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基础信息

类型
专利
申请号
P/855
状态
已注册
申请人
HOYA CORPORATION
代理机构
Tilleke & Gibbins Lao Co., Ltd
申请日期
2018-04-02
注册号
P/855
公开/公告日
2026-01-23
注册/授权日
2025-04-22
届满日
2038-04-02
国际分类
G11B 5/73 · G11B 5/738 · G11B 5/84
商品 / 服务
—

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摘要

A non-magnetic substrate for a magnetic disk includes a substrate main body having two opposing main surfaces, the substrate main body made of glass or aluminum alloy, and a metal film that is formed on the main surfaces and an outer circumferential edge surface of the substrate main body and is made of a material having a loss factor of 0.01 or more. The non-magnetic substrate has a thickness g1+D) of 0.700 mm or less, the thickness (t+O) being the sum of a thickness T of the substoate main body and a thickness D of the metal film, and a ratio D/T of the thickness D of the metal film to the thickness T of the zubstrate main body is 0.025 or more. The outer circumferential edge surface of the substrate main body forming an interface with the metal film has a surface roughness maximum height Rz of 0.5 um or more.

A non-magnetic substrate for a magnetic disk includes a substrate main body having two opposing main surfaces, the substrate main body made of glass or aluminum alloy, and a metal film that is formed on the main surfaces and an outer circumferential edge surface of the substrate main body and is made of a material having a loss factor of 0.01 or more. The non-magnetic substrate has a thickness g1+D) of 0.700 mm or less, the thickness (t+O) being the sum of a thickness T of the substoate main body and a thickness D of the metal film, and a ratio D/T of the thickness D of the metal film to the thickness T of the zubstrate main body is 0.025 or more. The outer circumferential edge surface of the substrate main body forming an interface with the metal film has a surface roughness maximum height Rz of 0.5 um or more.

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LaoBiz.com is a Laos business-information and market-research platform for global companies—helping users understand the Lao market, discover opportunities and find potential partners more efficiently. Commercial records are drawn mainly from official public registry systems maintained by Lao competent authorities—including MoIC’s NED (enterprise registration), BNED (business licences) and eBRS (business registration), MoF’s TaxRIS (tax registration), and related official public channels such as intellectual-property filings. LaoBiz does not create or alter registry facts; on top of those official public records we organise, standardise, translate, classify by industry and index for search so fragmented filings are easier to find, understand and use. We continuously watch official public-data changes and offer sync tools so users can check an enterprise’s latest public status.

LaoBiz.com is a Laos business-information and market-research platform for global companies—helping users understand the Lao market, discover opportunities and find potential partners more efficiently. Commercial records are drawn mainly from official public registry systems maintained by Lao competent authorities—including MoIC’s NED (enterprise registration), BNED (business licences) and eBRS (business registration), MoF’s TaxRIS (tax registration), and related official public channels such as intellectual-property filings. LaoBiz does not create or alter registry facts; on top of those official public records we organise, standardise, translate, classify by industry and index for search so fragmented filings are easier to find, understand and use. We continuously watch official public-data changes and offer sync tools so users can check an enterprise’s latest public status.

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Each LaoBiz.com company profile offers “Sync latest data”. Users can actively request verification for a specific enterprise; the page is then refreshed from what the public systems return. Because company registration, tax status and related public filings are maintained by different authorities, update timing may vary. For business decisions, legal documents, government approvals and other formal uses, please rely on the latest information and official documents issued by the competent authority.

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LaoBiz.com 是独立运营的商业信息服务平台，不属于任何政府机构、登记机关或官方代理机构。平台专注于老挝商业信息整理、企业查询、市场研究和商业数据应用服务，帮助用户完成企业背景查询、行业市场分析、供应链及合作伙伴筛选与投资前期研究。同时，平台可根据用户需求提供老挝市场相关的信息整理、商务咨询及企业服务支持。

LaoBiz.com is an independently operated business information platform and is not a government body, registry office or official agent. We focus on organising Lao commercial information and on company lookup, market research and data-application services—helping users with company background checks, industry analysis, supplier and partner screening, and early-stage investment research. We can also provide Lao-market information support, business advisory and related enterprise services based on user needs.

LaoBiz.com is an independently operated business information platform and is not a government body, registry office or official agent. We focus on organising Lao commercial information and on company lookup, market research and data-application services—helping users with company background checks, industry analysis, supplier and partner screening, and early-stage investment research. We can also provide Lao-market information support, business advisory and related enterprise services based on user needs.

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Rights in Lao government-published registry information and related data remain with the competent authorities. LaoBiz does not claim exclusive ownership of raw government data; we provide organisation, search, multilingual presentation and application of open commercial information. If a rights holder believes content should be corrected or adjusted, please contact us through the site—we will process verified requests.

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LaoBiz.com is provided by an operating entity registered in the Hong Kong Special Administrative Region of China. Our services involve Lao public commercial information and related market support, and we follow applicable laws and public-information use rules.

LaoBiz.com is provided by an operating entity registered in the Hong Kong Special Administrative Region of China. Our services involve Lao public commercial information and related market support, and we follow applicable laws and public-information use rules.

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