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. 19, 2000
Filed:
Feb. 09, 1998
Applicant:
Inventors:
Frederick J Daly, Burlington, CA;
Ake Deutschmann, Burlington, CA;
Henry Behmann, Puslinch, CA;
Martin J Hauschild, Burlington, CA;
Assignee:
Zenon Environmental, Inc., Burlington, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ;
U.S. Cl.
CPC ...
210650 ; 210636 ; 2101952 ; 2102572 ; 21033301 ; 2103331 ; 210 85 ; 210 89 ; 210100 ; 210108 ;
Abstract
A method of purifying impure water to provide drinking water using an apparatus, the method comprising the steps of providing a microfiltration unit, a reverse osmosis unit and a CIP (clean-in-place) tank containing retentate interconnected to permit backflushing the microfiltration filter with retentate and continued or uninterrupted operation of the reverse osmosis unit by directing retentate thereto.