Substrate for Magnetic Disks, and Magnetic Disk
The following summary describes a Laos Patent titled “Substrate for Magnetic Disks, and Magnetic Disk”, filed by HOYA CORPORATION on 2018-07-02; current status: Registered. Identifiers include application No. P/854; DIP id LAP854; protection kind Patent - PCT National Phase. Key dates: publication 2025-12-19; grant 2025-04-22; expiry reference 2038-07-02. Classification: G11B 5/73、G11B 5/82、G11B 5/84. Inventor(s)/designer(s): Kinobu OSAKABE. Abstract hint: A substrate for a magnetic disk includes a substrate main body having two main surfaces, and a fi.lm that is provided on the main surfaces…. Use LaoBiz.com to hop between this IP record, related filings by the same applicant, and the matched company profile when present.
P/854
Mark
Key facts
- Type
- Patent
- App. no.
P/854- Status
- Registered
- Applicant
- HOYA CORPORATION
- Agent
- Tilleke & Gibbins Lao Co., Ltd
- Filing date
- 2018-07-02
- Reg. no.
P/854- Publication
- 2025-12-19
- Registration / grant
- 2025-04-22
- Expiry
- 2038-07-02
- Protection kind
- Patent - PCT National Phase
- Gazette
- 301 · 2025-04-25
- Applicant address
- HOYA CORPORATION · 6-10-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo 1608347, Japan · JP
- Agent address
- Tilleke & Gibbins Lao Co., Ltd · No. 302/1B, 3rd Floor, Vieng Vang Tower, Unit 15, Boulichan Road, Dongpalan Thong Village, Sisattanak District, Vientiane Capital, Lao PDR · LA
- Nice / IPC classes
- G11B 5/73 · G11B 5/82 · G11B 5/84
- Goods / services
- —
Process
Steps follow the current public status-
Filed
-
Formal examination
-
Substantive examination
-
Published
-
Granted
Related records
Linked from the LaoBiz.com company databaseSimilar Patent
Abstract
A substrate for a magnetic disk includes a substrate main body having two main surfaces, and a fi.lm that is provided on the main surfaces and is made of a material having a loss factor of 0.1 or more. The substrate for a magnetic disk including the film has a thickness T of 0.700 mm or less, and a thickness D [mm] of the film provided on the main surfaces and the thickness T [mm] of the substrate for a magnetic disk including the fiIm satisfy a relationship D>0.0082/T-0.0015.
A substrate for a magnetic disk includes a substrate main body having two main surfaces, and a fi.lm that is provided on the main surfaces and is made of a material having a loss factor of 0.1 or more. The substrate for a magnetic disk including the film has a thickness T of 0.700 mm or less, and a thickness D [mm] of the film provided on the main surfaces and the thickness T [mm] of the substrate for a magnetic disk including the fiIm satisfy a relationship D>0.0082/T-0.0015.
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