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:
Dec. 31, 1991
Filed:
May. 29, 1990
Applicant:
Inventors:
Rolf Belz, Hohenstein, DE;
Barthold Conradt, WI-Erbenheim, DE;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ; B01D / ;
U.S. Cl.
CPC ...
210 94 ; 210264 ; 210282 ; 210283 ;
Abstract
In an apparatus for water treatment and comprising a pod containing a weakly acid or weakly basic ion exchanger and of which the inlet aperture is formed in the region of one end while the outlet orifice is formed in the region of the other end, in each case by a means which is permeable to liquid while retaining the ion exchanger, in order to render visible the fact that the ion exchanger is exhausted, there is in the region of the outlet orifice of the pod a chamber containing a strongly acid or strongly basic ion exchanger with a color indicator bonded thereon and the walls of which consist at least partially of a transparent material.