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:
Jul. 01, 2025
Filed:
Mar. 25, 2022
Applicant:
Toray Industries, Inc., Tokyo, JP;
Inventors:
Kenji Saito, Ehime, JP;
Koji Nakatsuji, Ehime, JP;
Hiroo Takabatake, Otsu, JP;
Shinya Shimoda, Ehime, JP;
Assignee:
Toray Industries, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/95 (2006.01); B01D 61/02 (2006.01); B01D 61/10 (2006.01); B01D 63/10 (2006.01); B01D 65/10 (2006.01); G01N 1/34 (2006.01);
U.S. Cl.
CPC ...
G01N 21/95 (2013.01); B01D 61/025 (2013.01); B01D 61/10 (2013.01); B01D 63/10 (2013.01); B01D 65/109 (2022.08); G01N 1/34 (2013.01);
Abstract
The present invention relates to a damage inspection method for a reverse osmosis membrane, in which at least one of: presence or absence of physical damage; and a degree of physical damage in a reverse osmosis membrane is inspected based on presence or absence of a stained area on at least a permeate side of a stained membrane obtained by supplying a water-to-be-treated including a staining agent to the reverse osmosis membrane to stain the reverse osmosis membrane.