Asahi Glass Company, Limited

Fumiaki Saito

Hisao Yamamoto

Kazuhiko Ishimura

Chikao Tanaka

Misao Okada

Sei Nagano

Shinji Takeshita

Masaaki Yoshikawa

Shinji Yamamura

Hajime Ito

Shinsuke Nakajima

Koji Hirasawa

Hiroshi Ando

A grinding wheel for polishing, which comprises a grinding substrate and diamond-containing resin fibers implanted in the substrate in a form of a brush.

Grinding wheel for polishing and polishing method employing it

A backup structure for a pipe for feeding a molten substance of high temperature has a pipe and a thermal insulation material surrounding the pipe wherein the pipe is provided with a plurality of projections on its outer periphery at predetermined intervals, and each of the productions is held at its both sides by the thermal insulation material.

Backup structure for a pipe for feeding a molten substance of high

A vacuum degassing method wherein a molten substance at an elevated temperature in a storage tank is sucked to a vacuum degassing vessel through an uprising pipe connecting the storage tank and the vacuum degassing vessel by maintaining the vacuum degassing vessel at a negative pressure, the molten substance is degassed and the degassed molten substance falls to a guiding duct through a downfalling pipe connecting the vacuum degassing vessel and the guiding duct characterized by that a first flow quantity of the molten substance rising in the uprising pipe is restrained and a second flow quantity thereof falling in the downfalling pipe is controlled thereby maintaining a quantity of the molten substance in the vacuum degassing vessel at a pertinent level.

Vacuum degassing method and its apparatus

Growing community of inventors

Hyogo, Japan

Fumiaki Saito