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:
Jan. 23, 2024
Filed:
Jul. 13, 2020
Applicant:
Fujifilm Corporation, Tokyo, JP;
Inventors:
Tadashi Omatsu, Shizuoka, JP;
Tetsuya Kamimura, Shizuoka, JP;
Tetsuya Shimizu, Shizuoka, JP;
Satomi Takahashi, Shizuoka, JP;
Assignee:
FUJIFILM CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 61/18 (2006.01); B01D 61/20 (2006.01); B01D 71/56 (2006.01); B01D 71/64 (2006.01); B01D 61/14 (2006.01); B01D 69/02 (2006.01);
U.S. Cl.
CPC ...
B01D 61/18 (2013.01); B01D 61/146 (2022.08); B01D 61/20 (2013.01); B01D 71/56 (2013.01); B01D 71/64 (2013.01); B01D 69/02 (2013.01); B01D 2319/02 (2013.01);
Abstract
A filtering device is for obtaining a chemical liquid by purifying a liquid to be purified, and the filtering device has an inlet portion, an outlet portion, a filter A, at least one filter B different from the filter A, and a flow path which includes the filter A and the filter B arranged in series and extends from the inlet portion to the outlet portion, in which the filter A is a porous membrane containing a polyimide-based resin.