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:
Oct. 18, 2022
Filed:
May. 07, 2018
Applicant:
Ngk Insulators, Ltd., Nagoya, JP;
Inventors:
Assignee:
NGK Insulators, Ltd., Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 65/10 (2006.01); B01D 69/10 (2006.01); B01D 67/00 (2006.01); B01D 71/02 (2006.01);
U.S. Cl.
CPC ...
B01D 65/108 (2013.01); B01D 67/0088 (2013.01); B01D 69/10 (2013.01); B01D 71/028 (2013.01);
Abstract
A repair method for a separation membrane including a step of applying a colloidal solution to a surface of a separation membrane formed on a support. The colloidal solution has a predetermined pH. In colloidal solution, repair material particles are dispersed in an aqueous solvent. The repair material particles have an electrical charge that is opposite to an electrical charge of the support at the predetermined pH.