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. 10, 1993
Filed:
Aug. 06, 1990
Applicant:
Inventors:
Kenji Ichikawa, Bizen, JP;
Osamu Nomura, Bizen, JP;
Akihiro Morita, Bizen, JP;
Yoichiro Kawabe, Wake, JP;
Hideaki Fujiwara, Tsukubo, JP;
Koyo Yanagawa, Bizen, JP;
Assignee:
Shinagawa Refractories Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D / ; C21C / ;
U.S. Cl.
CPC ...
75305 ; 75309 ; 164473 ;
Abstract
A mold additive suitable for use in a mold for continuous casting of steel which comprises, as its base material, at least 50% by weight of synthetic calcium silicate which contains CaO and SiO.sub.2 in a total amount not less than 70% by weight, and whose CaO/SiO.sub.2 ratio is not lower than 1.20. A mold additive of low bulk density and superior in heat insulation can be obtained and its CaO/SiO.sub.2 ratio can be widely adjusted.