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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.:

US 12618821 B1

PDFFull Text
Date of Patent:
May. 05, 2026

Filed:

Sep. 23, 2022

Powder composition, kit, and method for determining orthophosphate concentration

Applicant:

Hach Company, Loveland, CO (US);

Inventors:

Sarah Anciaux, Fort Collins, CO (US);

Melinda Buyck, Nevada, IA (US);

Assignee:

HACH COMPANY, Loveland, CO (US);

Attorney:

Oliff PLC

Primary Examiner:

Jennifer Wecker

Assistant Examiner:

Oyeleye Alexander Alabi

Int. Cl.
CPC ...
B01L 3/00 (2006.01); B01F 33/302 (2022.01); B01F 33/3033 (2022.01); B01L 7/00 (2006.01); B33Y 80/00 (2015.01); C12M 1/00 (2006.01); C12M 1/34 (2006.01); C12M 3/00 (2006.01); C12M 3/06 (2006.01); C12Q 1/6848 (2018.01); C12Q 1/686 (2018.01); C12Q 1/6874 (2018.01); G01N 21/29 (2006.01); G01N 21/78 (2006.01); G01N 31/22 (2006.01); G01N 33/18 (2006.01);
U.S. Cl.
CPC ...
G01N 33/182 (2013.01); G01N 21/78 (2013.01); G01N 31/22 (2013.01); C04B 2235/447 (2013.01);
Abstract

A kit and powder composition are described that can be used to determine a concentration of orthophosphate in a water system. The kit includes a first powder composition including molybdate; and a second powder composition including ascorbic acid. A powder composition is also described that includes molybdate, pyrosulfate, and less than 1 wt. % ascorbic acid. A method for determining the concentration of orthophosphate in a water system using the kit includes adding the first and second powder compositions to a water sample collected from the water system, measuring an absorbance of the water sample after the first and second powder compositions have been added to the water sample, and determining the concentration of orthophosphate in the water system based on the measured absorbance.

Find Patent Forward Citations

Anciaux, Sarah. (2026). Powder composition, kit, and method for determining orthophosphate concentration (U.S. Patent No. 12618821). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12618821

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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