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:
Apr. 01, 2003
Filed:
Jun. 06, 2001
Applicant:
Inventors:
Toshihiro Ishikawa, Ube, JP;
Yoshikatu Harada, Ube, JP;
Hidekuni Hayashi, Ube, JP;
Shinji Kajii, Ube, JP;
Assignee:
Ube Industries, Ltd., Yamaguchi-ken, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J 2/108 ; B01J 3/100 ; C03C 1/300 ;
U.S. Cl.
CPC ...
B01J 2/108 ; B01J 3/100 ; C03C 1/300 ;
Abstract
A silica-group composite oxide fiber formed of a composite oxide phase of an oxide phase (first phase) mainly made of a silica component and a metal oxide phase (second phase) excluding silica, in which the existent ratio of at least one metal element of a metal oxide constituting the second phase upward slopingly increases toward the surface layer of the fiber and a process for the production thereof.