The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 01, 2002
Filed:
Jun. 07, 1999
Applicant:
Inventors:
Yusuke Takei, Tokyo, JP;
Michito Sasaki, Kanagawa, JP;
Masataka Matsuwaki, Kanagawa, JP;
Shigekuni Inoue, Kanagawa, JP;
Atsushi Tanigaki, Kanagawa, JP;
Mitsuo Sugimoto, Kanagawa, JP;
Assignee:
Asahi Glass Company Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C03B 5/225 ; C03B 5/425 ; C03B 5/43 ;
U.S. Cl.
CPC ...
C03B 5/225 ; C03B 5/425 ; C03B 5/43 ;
Abstract
A vacuum degassing apparatus comprises a path made of dense refractory bricks, the path including an inner surface brick layer, the refractory bricks in the inner surface brick layer having a flatness of 0.5 mm on contacting surfaces with one anther, and the path including a backup brick layer and a ramming material filling layer besides the inner surface brick layer.