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:
May. 17, 1983
Filed:
Nov. 13, 1981
Applicant:
Inventor:
Kashiro Nakagami, Toyohashi, JP;
Assignee:
Isolite Babcock Refractories Co., Ltd., Aichi, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ; C04B / ; C04B / ; C04B / ;
U.S. Cl.
CPC ...
501 95 ; 423327 ; 501128 ; 501-5 ;
Abstract
Mullite ceramic fiber produced by mixing an aluminosilicate fiber having less than 72 weight percent of Al.sub.2 O.sub.3 with high-alumina substances, such as polycrystalline high-alumina fibers having more than 72 weight percent of Al.sub.2 O.sub.3, and heating of the mixture to about 1,300.degree. to 1,450.degree. C., results in a refractory material characterized by lower bulk density, a low degree of contraction, substantial maintenance of original fiber shape, and total or nearly total consumption of free silica, with corresponding reduction in silicic acid.