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:
Jun. 30, 1998
Filed:
Jul. 31, 1995
Applicant:
Inventors:
Richard J Ciora, Jr, Butler, PA (US);
Paul K Liu, Pittsburgh, PA (US);
Assignee:
Media and Process Technology Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428 346 ; 4283077 ; 4283128 ; 428325 ; 428328 ; 428329 ; 428699 ; 428701 ; 428702 ; 21050021 ; 210506 ;
Abstract
A ceramic fired composite filter media having a uniform pore size, the media consisting essentially of a porous cordierite substrate having a surface having pores of non-uniform diameter, the diameter ranging from <1 to 200 .mu.m; and a layer of porous ceramic oxide having pores having a uniform diameter bonded to the surface of the cordierite substrate, the layer of ceramic oxide comprised of ceramic oxide particles having a particle size sufficiently large to avoid substantial penetration of the pores in the surface of the cordierite.