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:
Jul. 04, 2017
Filed:
Oct. 08, 2008
Eugene Tokhtuev, Duluth, MN (US);
Christopher J. Owen, Duluth, MN (US);
Viktor Slobodyan, Duluth, MN (US);
William M. Christensen, Hibbing, MN (US);
Paul Schilling, Duluth, MN (US);
Joseph Phillip Erickson, Cloquet, MN (US);
Eugene Tokhtuev, Duluth, MN (US);
Christopher J. Owen, Duluth, MN (US);
Viktor Slobodyan, Duluth, MN (US);
William M. Christensen, Hibbing, MN (US);
Paul Schilling, Duluth, MN (US);
Joseph Phillip Erickson, Cloquet, MN (US);
Ecolab USA Inc., St. Paul, MN (US);
Abstract
A multi-channel device includes up to three channels for optical testing of liquid samples. The liquid sample(s) may include surface water, drinking water, processed water or the like. The multi-channel device may include a turbidity channel and a color channel that measure turbidity and color, respectively, of a liquid sample using spectrographic analysis. The multi-channel device may also include a colorimetric channel that measures the concentration of various analytes in a liquid sample, such as free chlorine, total chlorine, copper and phosphate.