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:
Mar. 26, 1991
Filed:
Sep. 19, 1989
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
A process for producing an alumina-based fiber, which involves mixing an aluminum compound represented by the general formula AIR.sub.1 R.sub.2 R.sub.3 (wherein R.sub.1 R.sub.2 and R.sub.3 are each an organic group or a halogen) with water in a molar ratio of ([H.sub.2 O]/[AIR.sub.1 R.sub.2 R.sub.3 ]) of 1.10 to 1.40 to produce a polyaluminoxane, mixing the polyaluminoxane with at least one silicon-containing compound in an amount such that desired alumina-based fiber has, after calcining, a silica content of up to 70%, spinning the resulting mixture of polyaluminoxane and silicon-containing compound under an atmosphere controlled at a temperature of above 28.degree. C. and a relative humidity of above 35% to obtain precursor fiber, and then calcinating the precursor fiber to obtain an alumina-based fiber.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile