METHOD FOR MANUFACTURING GLASS PLATE, METHOD FOR MANUFACTURING GLASS SUBSTRATE FOR MAGNETIC DISK, METHOD FOR MANUFACTURING MAGNETIC DISK, AND ANNULAR GLASS PLATE
This Laos Patent “METHOD FOR MANUFACTURING GLASS PLATE, METHOD FOR MANUFACTURING GLASS SUBSTRATE FOR MAGNETIC DISK, METHOD FOR MANUFACTURING MAGNETIC DISK, AND ANNULAR GLASS PLATE” is a public DIP intellectual-property record, filed by HOYA CORPORATION on 2021-11-25; current status: Registered. Identifiers include application No. P/899; DIP id LAP899; protection kind Patent - PCT National Phase. Key dates: publication 2026-01-23; grant 2026-01-08; expiry reference 2041-11-25. Classification: B23K 26/354、C03B 29/02、C03B 33/09、C03C 19/00、C03C 23/00. Inventor(s)/designer(s): Shuhei AZUMA. Abstract hint: In a method for manufacturing a glass plate that includes chamfering processing for chamfering an edge surface of a glass plate, the chamfe…. Unique application identifiers, holders and classification text are surfaced here to reduce near-duplicate IP landing pages; always verify against the competent office.
P/899
Mark
Key facts
- Type
- Patent
- App. no.
P/899- Status
- Registered
- Applicant
- HOYA CORPORATION
- Agent
- Tilleke & Gibbins Lao Co., Ltd
- Filing date
- 2021-11-25
- Reg. no.
P/899- Publication
- 2026-01-23
- Registration / grant
- 2026-01-08
- Expiry
- 2041-11-25
- Protection kind
- Patent - PCT National Phase
- Gazette
- 338 · 2026-01-09
- Applicant address
- HOYA CORPORATION · 6- 1 0-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo 1608347, Japan · JP
- Agent address
- Tilleke & Gibbins Lao Co., Ltd · No. 302, 3rd Floor, Vieng Vang Tower, Unit 15, Boulichan Road, Dongpalan Thong Village, Sisattanak District, Vientiane Capital, Lao PDR · LA
- Nice / IPC classes
- B23K 26/354 · C03B 29/02 · C03B 33/09 · C03C 19/00 · C03C 23/00
- Goods / services
- —
Process
Steps follow the current public status-
Filed
-
Formal examination
-
Substantive examination
-
Published
-
Granted
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Abstract
In a method for manufacturing a glass plate that includes chamfering processing for chamfering an edge surface of a glass plate, the chamfering 5 processing includes a step of forming a chamfered surface by irradiating the edge surface of the glass plate with a laser beam, and a step of heating the glass plate before the chamfered surface is formed. When a temperature of the glass blank at which the glass blank is heated is Tp ['C], a glass transition point of the glass blank is Tg ['C], and an average coefficient of linear thermal expansion 10 of the glassblankiso [U"C], (Tg-Tp)S -5.67 x 107. o+840issatisfied.
In a method for manufacturing a glass plate that includes chamfering processing for chamfering an edge surface of a glass plate, the chamfering 5 processing includes a step of forming a chamfered surface by irradiating the edge surface of the glass plate with a laser beam, and a step of heating the glass plate before the chamfered surface is formed. When a temperature of the glass blank at which the glass blank is heated is Tp ['C], a glass transition point of the glass blank is Tg ['C], and an average coefficient of linear thermal expansion 10 of the glassblankiso [U"C], (Tg-Tp)S -5.67 x 107. o+840issatisfied.
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