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:
Jun. 07, 2022
Filed:
Feb. 08, 2018
Applicant:
Organo Corporation, Tokyo, JP;
Inventors:
Fumitaka Ichihara, Tokyo, JP;
Hiroshi Sugawara, Tokyo, JP;
Assignee:
ORGANO CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
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.