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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 11130688 B1

PDFFull Text
Date of Patent:
Sep. 28, 2021

Filed:

Sep. 15, 2017

Method for controlling ph by electrical conductivity

Applicant:

Kurita Water Industries Ltd., Tokyo, JP;

Inventors:

Mamoru Iwasaki, Tokyo, JP;

Nozomu Ikuno, Tokyo, JP;

Assignee:

KURITA WATER INDUSTRIES LTD., Tokyo, JP;

Attorney:

Manabu Kanesaka

Primary Examiner:

Richard C Gurtowski

Int. Cl.
CPC ...
C02F 1/66 (2006.01); B01D 19/00 (2006.01); B01D 61/02 (2006.01); B01D 61/04 (2006.01); B01D 61/12 (2006.01); C02F 1/00 (2006.01); C02F 1/20 (2006.01); C02F 1/44 (2006.01); C02F 101/10 (2006.01); C02F 103/06 (2006.01);
U.S. Cl.
CPC ...
C02F 1/66 (2013.01); B01D 19/0031 (2013.01); B01D 19/0068 (2013.01); B01D 61/025 (2013.01); B01D 61/04 (2013.01); B01D 61/12 (2013.01); C02F 1/008 (2013.01); C02F 1/20 (2013.01); C02F 1/441 (2013.01); B01D 2311/04 (2013.01); B01D 2311/18 (2013.01); B01D 2311/2653 (2013.01); C02F 2101/10 (2013.01); C02F 2103/06 (2013.01); C02F 2209/05 (2013.01); C02F 2209/06 (2013.01);
Abstract

Provided is a method for controlling a pH to a neutral range (pH 6 to 8) by adding an alkali or an acid to decarbonated water, including controlling the amount of the alkali or the acid added using an electrical conductivity meter. The decarbonated water is, for example, water obtained by decarbonating industrial water or groundwater so that the concentration of carbonic acid is 10 ppm or less. The method may further have a step of producing pure water by RO treatment of the decarbonated water with a pH adjusted to 6 to 8 by the pH control.

Find Patent Forward Citations

Iwasaki, Mamoru. (2021). Method for controlling ph by electrical conductivity (U.S. Patent No. 11130688). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11130688

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

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