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:
Apr. 21, 2026
Filed:
Aug. 30, 2024
Applicant:
Nomura Micro Science Co., Ltd., Atsugi, JP;
Inventors:
Assignee:
Nomura Micro Science Co., Ltd., Atsugi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C02F 9/00 (2023.01); B01D 15/36 (2006.01); B01D 61/14 (2006.01); B01D 61/16 (2006.01); B01D 61/18 (2006.01); B01D 65/02 (2006.01); C02F 1/00 (2023.01); C02F 1/32 (2023.01); C02F 1/42 (2023.01); C02F 1/44 (2023.01); C02F 1/52 (2023.01); C02F 1/72 (2023.01); C02F 103/04 (2006.01); C02F 103/34 (2006.01);
U.S. Cl.
CPC ...
C02F 9/00 (2013.01); B01D 15/361 (2013.01); B01D 61/146 (2022.08); B01D 61/16 (2013.01); B01D 61/18 (2013.01); B01D 65/02 (2013.01); B01D 2311/04 (2013.01); B01D 2311/06 (2013.01); B01D 2315/08 (2013.01); B01D 2317/022 (2013.01); B01D 2317/025 (2013.01); B01D 2317/06 (2013.01); C02F 2001/007 (2013.01); C02F 1/325 (2013.01); C02F 1/42 (2013.01); C02F 1/444 (2013.01); C02F 1/5245 (2013.01); C02F 1/72 (2013.01); C02F 2103/04 (2013.01); C02F 2103/346 (2013.01); C02F 2301/043 (2013.01); C02F 2301/046 (2013.01); C02F 2301/08 (2013.01); C02F 2303/16 (2013.01);
Abstract
A production method for water for pure water includes adding polyaluminum chloride to raw water to produce first treated water, and filtering the first treated water in two or more stages including filtering with a filtration membrane device in a preceding stage to produce first concentrated water, and filtering the first concentrated water with a filtration membrane device in a subsequent stage. The water for pure water is produced as permeated water produced by the filtering in the two or more stages.