Method for producing glass material, device for producing glass material, and glass material

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10611660
SERIAL NO

15565713

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Abstract

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Provided is a method that enables a crystal-free glass material to be stably produced by a containerless levitation technique. A glass material 30 has a first surface 31 facing a forming surface 10a and a second surface 32 located on a side opposite to the forming surface 10a. The first surface 31 includes a central portion 31a and a peripheral portion 31b located outside of the central portion 31a. Gas is jetted through a gas jet hole at a flow velocity and a flow volume at which a glass material satisfying R231 is formed where R1 represents a radius of curvature of the central portion 31a, R2 represents a radius of curvature of the peripheral portion 31b, and R3 represents a radius of curvature of the second surface 32.

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Patent Owner(s)

Patent OwnerAddress
THE UNIVERSITY OF TOKYOBUNKYO-KU TOKYO 113-8654
NIPPON ELECTRIC GLASS CO LTDOTSU-SHI SHIGA 520-8639

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Inoue, Hiroyuki Bunkyo-ku, JP 299 4099
Masuno, Atsunobu Bunkyo-ku, JP 10 28
Sato, Fumio Otsu, JP 89 396
Yamada, Tomoko Otsu, JP 35 371

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