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:
Aug. 31, 1999
Filed:
Sep. 22, 1997
Applicant:
Inventors:
Toshihiro Ishikawa, Ube, JP;
Yoshikatu Harada, Ube, JP;
Yoshiyuki Inoue, Ube, JP;
Hiroyuki Yamaoka, Ube, JP;
Assignee:
Ube Industries, Ltd., Yamaguchi-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501 951 ; 501 88 ; 501 89 ; 501 92 ;
Abstract
A crystalline silicon carbide fiber excellent not only in mechanical properties but also in alkali durability at high temperatures, which has a density of at least 2.7 g/cm.sup.3, contains 55 to 70% by weight of Si, 30 to 45% by weight of C, 0.06 to 3.8% by weight of Al and 0.06 to 0.5% by weight of B, the total of these elements being 100% by weight, and has a sintered structure of SiC.