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:
Sep. 03, 1996
Filed:
Jan. 17, 1995
Applicant:
Inventor:
Joseph M Ragosta, Elkton, MD (US);
Assignee:
Graver Chemical Company, Glasgow, DE (US);
Primary Examiner:
Int. Cl.
CPC ...
C02F / ; B01D / ;
U.S. Cl.
CPC ...
210660 ; 210679 ; 210777 ; 210266 ; 210193 ; 2103232 ; 2104971 ; 210437 ; 2105021 ; 210503 ;
Abstract
The present invention provides a filter element that comprises a center core and at least one layer of ion exchange yarn wound about the center core. In a preferred embodiment, more than one winding layer is wound about the core. The present invention also provides a method for purifying liquids, the method comprising providing a filter unit that contains a filter element that comprises a center core and at least one layer of ion exchange yarn wound about the core, and passing a liquid to be purified through the filter element.