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. 28, 2020
Filed:
Jan. 24, 2018
Applicant:
Ecolab Usa Inc., St. Paul, MN (US);
Inventors:
Saugata Gon, Sugar Land, TX (US);
Anoop Chengara, Aurora, IL (US);
Assignee:
ECOLAB USA INC., St. Paul, MN (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C02F 1/68 (2006.01); G01N 33/18 (2006.01); G01N 21/64 (2006.01); C02F 1/52 (2006.01); C02F 1/50 (2006.01); C02F 103/10 (2006.01);
U.S. Cl.
CPC ...
C02F 1/68 (2013.01); C02F 1/50 (2013.01); C02F 1/5209 (2013.01); C02F 1/5272 (2013.01); G01N 21/643 (2013.01); G01N 33/1813 (2013.01); C02F 2103/10 (2013.01); C02F 2303/08 (2013.01); C02F 2303/18 (2013.01); G01N 2021/6439 (2013.01);
Abstract
A method for detecting and controlling the amount of cationic species in a water stream in accordance with embodiments of the present disclosure is carried out by adding a solution containing a pre-determined quantity of a fluorescent tracer to the sample of water stream to obtain a solution comprising a complex. The fluorescence emission spectra of the solution is measured for detecting the presence or absence of the cationic species based on the attenuation and shift of the emission peak in the range of 640 nm to 655 nm.