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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 11351507 B1

PDFFull Text
Date of Patent:
Jun. 07, 2022

Filed:

Feb. 08, 2018

Method of evaluating level of cleanliness of hollow fiber membrane device, method of washing hollow fiber membrane device, and washing device for hollow fiber membrane device

Applicant:

Organo Corporation, Tokyo, JP;

Inventors:

Fumitaka Ichihara, Tokyo, JP;

Hiroshi Sugawara, Tokyo, JP;

Assignee:

ORGANO CORPORATION, Tokyo, JP;

Attorney:

Greenblum & Bernstein, P.L.C.

Primary Examiner:

Bradley R Spies

Assistant Examiner:

Jeannie McDermott

Int. Cl.
CPC ...
B01D 65/10 (2006.01); B01D 61/14 (2006.01); B01D 61/20 (2006.01); B01D 65/02 (2006.01); B01D 69/08 (2006.01); C02F 1/44 (2006.01); G01N 15/08 (2006.01); C02F 103/04 (2006.01);
U.S. Cl.
CPC ...
B01D 65/10 (2013.01); B01D 61/145 (2013.01); B01D 61/20 (2013.01); B01D 65/02 (2013.01); B01D 69/08 (2013.01); C02F 1/444 (2013.01); G01N 15/0806 (2013.01); C02F 2103/04 (2013.01); G01N 2015/086 (2013.01);
Abstract

The level of cleanliness of a hollow fiber membrane device is evaluated before it is installed in an ultrapure water production system. A method of evaluating the level of cleanliness of the hollow fiber membrane device includes capturing fine particles in permeating water by means of a first filter membrane, wherein the permeating water is ultrapure water that permeates through the hollow fiber membrane device before the hollow fiber membrane device is installed in an ultrapure water production system; and analyzing the fine particles that are captured by the filter membrane.

Find Patent Forward Citations

Ichihara, Fumitaka. (2022). Method of evaluating level of cleanliness of hollow fiber membrane device, method of washing hollow fiber membrane device, and washing device for hollow fiber membrane device (U.S. Patent No. 11351507). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11351507

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

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