NON-MAGNETIC SUBSTRATE FOR MAGNETIC DISK, AND MAGNETIC DISK
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/679; DIP id LAP679; protection kind Patent - PCT National Phase. Key dates: publication 2022-10-07; grant 2022-10-04; expiry reference 2038-04-02. Classification: G11B 5/73、G11B 5/82. Inventor(s)/designer(s): OSAKABE, Kinobu. Abstract hint: A non-magnetic substrate for a magnetic disk includes a substrate main body having two opposing main surfaces, and a metal film that is pro…. Use LaoBiz.com to hop between this IP record, related filings by the same applicant, and the matched company profile when present.
P/679
Mark
Key facts
- Type
- Patent
- App. no.
P/679- Status
- Registered
- Applicant
- HOYA CORPORATION
- Agent
- Tilleke & Gibbins Lao Co., Ltd
- Filing date
- 2018-04-02
- Reg. no.
P/679- Publication
- 2022-10-07
- Registration / grant
- 2022-10-04
- Expiry
- 2038-04-02
- Protection kind
- Patent - PCT National Phase
- Gazette
- 175 · 2022-10-07
- Applicant address
- HOYA CORPORATION · 6-10-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo 1608347 · JP
- Agent address
- Tilleke & Gibbins Lao Co., Ltd · No. 302/1B, 3rd Floor, Vieng Vang Tower, Unit 15 Boulichan Road, Donpalan Thong Village, Sisattanak District, Vientiane, Lao PDR Telephone: 021 262355 Mobile: - Fax: 021 262356 · TH
- Nice / IPC classes
- G11B 5/73 · G11B 5/82
- Goods / services
- —
Process
Steps follow the current public status-
Filed
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Formal examination
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Substantive examination
-
Published
-
Granted
Related records
Linked from the LaoBiz.com company databaseSimilar Patent
Abstract
A non-magnetic substrate for a magnetic disk includes a substrate main body having two opposing main surfaces, and a metal film that is provided on the main surfaces and is made of a material having a loss factor of 0.01 or more. The non. magnetic substrate has a thickness (T+D) of 0.700 mm or less, the thickness (T+D) being the sum of a thickness T of the substrate 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 substrate main body is 0.025 or more.
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