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:
Oct. 17, 1989
Filed:
Dec. 23, 1985
Applicant:
Inventor:
Kuniharu Kondo, Nagoya, JP;
Assignee:
NGK Insulators, Ltd., Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ;
U.S. Cl.
CPC ...
210490 ; 21049701 ; 21050021 ; 21050027 ; 21050036 ; 21050042 ; 210506 ; 2105101 ;
Abstract
This invention relates to a filter which includes a substrate of a ceramic porous material of a high strength, which serves as a support, covered with a microporous membrane of a polymer, typically a fluorocarbon polymer, partly permeating the surface layer of the substrate and acting as a filter for fine particles. The filter exhibits excellent corrosion-resistance, durableness and heat-resistance and is used for semi-ultrafiltration such as filtration for sterilization, purification of crystals and the like.