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:
Jan. 21, 1997
Filed:
Sep. 19, 1994
Applicant:
Inventor:
Norman B Rainer, Richmond, VA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01J / ; B01J / ;
U.S. Cl.
CPC ...
210282 ; 210287 ; 210263 ; 210681 ; 521 25 ; 521 29 ; 521 32 ;
Abstract
Undesirable ionic species are removed from water by way of a passive treatment employing apparatus in the form of a porous container which confines a multitude of pieces of sponge containing a chelation polymer. The container, preferably of tubular shape and having a draw-string closure, is emplaced into a region through which water to be treated is caused to flow. The manner of emplacement is such as to prevent by-pass of water around the container. After a suitable time interval, the apparatus is removed and replaced with similar apparatus having fresh sponge.