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:
Feb. 24, 2004
Filed:
Mar. 13, 2002
Applicant:
Inventors:
Bruce A. Bishop, Arlington, MA (US);
Peter J. Hayward, Pinawa, CA;
Robert L. Goldsmith, Wayland, MA (US);
Garry G. Haacke, Belmont, MA (US);
Assignee:
CeraMem Corporation, Waltham, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 3/506 ; B32B 3/12 ;
U.S. Cl.
CPC ...
B01D 3/506 ; B32B 3/12 ;
Abstract
A reaction-bonded &agr;-alumina filter element is provided. The filter element includes a monolith of porous material having multiple passageways extending from one end face to an opposing end face. The monolith is extruded from a mixture containing at least aluminum metal and alumina powders in a proportion such that on sintering the volume change of the monolith is minimized. The filter body can be used as a filter or as a membrane support for crossflow or dead end flow filter elements. A method for making the filter element is also provided.