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:
Apr. 03, 1990
Filed:
Nov. 19, 1987
Applicant:
Inventors:
Kenneth A Evans, Bucks, GB;
Richard J Hedley, Bucks, GB;
Christopher F Pygall, Bucks, GB;
Adrian K Smith, Fife, GB;
Kevin J Wills, Slough Berkshire, GB;
Assignee:
Alcan International Limited, Quebec, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; C01B / ;
U.S. Cl.
CPC ...
2523132 ; 51308 ; 106 3835 ; 1062865 ; 252309 ; 2523131 ; 2523157 ; 501119 ;
Abstract
Stable alkaline sols of anionic alumina hydrate may be made by calcining alumina trihydrate and milling the monohydrate produced under alkaline conditions. Alkaline sols containing both anionic alumina hydrate and anionic colloidal silica may be used for bonding refractory bodies.