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:
Aug. 12, 2025
Filed:
Feb. 26, 2020
Applicant:
Toray Industries, Inc., Tokyo, JP;
Inventors:
Kentaro Kobayashi, Otsu, JP;
Atsushi Kobayashi, Otsu, JP;
Assignee:
Toray Industries, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 63/04 (2006.01); B01D 63/02 (2006.01); B01D 65/02 (2006.01); B01D 65/08 (2006.01); B01D 71/34 (2006.01); C02F 1/44 (2023.01); C02F 103/32 (2006.01);
U.S. Cl.
CPC ...
B01D 63/046 (2013.01); B01D 63/024 (2013.01); B01D 65/02 (2013.01); B01D 65/08 (2013.01); B01D 71/34 (2013.01); C02F 1/44 (2013.01); B01D 2221/06 (2013.01); B01D 2311/14 (2013.01); B01D 2313/24 (2013.01); B01D 2315/10 (2013.01); B01D 2315/20 (2013.01); B01D 2317/04 (2013.01); B01D 2321/04 (2013.01); B01D 2321/12 (2013.01); B01D 2321/18 (2013.01); B01D 2325/38 (2013.01); C02F 2103/32 (2013.01);
Abstract
The present invention relates to a method of operating a membrane filtration unit including plural hollow fiber membrane modules connected to each other in parallel, the method including: a filtration step; a collection step; and a recovery step, in which a relation of n≥n>nis satisfied, where nis the number of the hollow fiber membrane modules simultaneously used in executing the filtration step, nis the number of the hollow fiber membrane modules simultaneously used in executing the collection step, and nis the number of the hollow fiber membrane modules simultaneously used in executing the recovery step.