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:
Sep. 10, 1985
Filed:
Aug. 11, 1983
Applicant:
Inventors:
Akira Watanabe, Okayama, JP;
Yoshimitsu Takeuchi, Bizen, JP;
Noboru Shinoda, Bizen, JP;
Tetsusaburo Isono, Bizen, JP;
Kenji Fujiwara, Bizen, JP;
Assignee:
Kyushu Refractories Co., Ltd., Bizen, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ; C04B / ; C04B / ; C04B / ;
U.S. Cl.
CPC ...
501 97 ; 501 87 ; 501 88 ; 501 92 ; 501 98 ;
Abstract
The present invention relates to silicon nitride composite refractories having silicon nitride bonds therein and having an increased thermal shock-resistance, an improved molten steel-resistance and an improved mechanical strength, which consists of silicon nitride at 20 to 60 wt %, refractory materials at 10 to 50 wt % and boron nitirde at 1 to 30 wt %, or additionally carbon fibers of 0.5 to 10 wt %. The above described characteristics can be realized because the silicon nitride bonds are bonding structures.