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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.:

US 12350624 B1

PDFFull Text
Date of Patent:
Jul. 08, 2025

Filed:

May. 10, 2021

Gas separation method and apparatus

Applicant:

Renaissance Energy Research Corporation, Kyoto, JP;

Inventors:

Osamu Okada, Kyoto, JP;

Nobuaki Hanai, Kyoto, JP;

Assignee:

Renaissance Energy Research Corporation, Kyoto, JP;

Attorneys:

Andrew L. Dunlap

Haynes Beffel & Wolfeld LLP

Primary Examiner:

Stephen Hobson

Int. Cl.
CPC ...
B01D 53/22 (2006.01); B01D 69/02 (2006.01); B01D 69/12 (2006.01); B01D 71/26 (2006.01); B01D 71/34 (2006.01); B01D 71/40 (2006.01); B01D 71/42 (2006.01); B01D 71/44 (2006.01); B01D 71/50 (2006.01); B01D 71/64 (2006.01);
U.S. Cl.
CPC ...
B01D 53/228 (2013.01); B01D 69/02 (2013.01); B01D 69/1213 (2022.08); B01D 69/1216 (2022.08); B01D 71/261 (2022.08); B01D 71/262 (2022.08); B01D 71/34 (2013.01); B01D 71/401 (2022.08); B01D 71/421 (2022.08); B01D 71/441 (2022.08); B01D 71/50 (2013.01); B01D 71/64 (2013.01); B01D 2053/221 (2013.01); B01D 2257/504 (2013.01); B01D 2325/10 (2013.01); B01D 2325/20 (2013.01); B01D 2325/36 (2013.01); B01D 2325/38 (2013.01);
Abstract

A gas separation method is provided. The method includes using a gas separation apparatus comprising a selective permeable membrane and a first and second treatment chambers separated by the selective permeable membrane. A mixed gas containing a gas to be separated is supplied into (or generated within) the first treatment chamber, and the gas to be separated is separated from the mixed gas by having the gas to be separated permeate from the first/second treatment chamber side of the selective permeable membrane, which has a stacked laminated structure of a hydrophilic porous membrane, a separation-functional layer, and a first protective membrane, and the separation-functional layer includes a layer of hydrophilic polymer containing water, and the first treatment chamber is provided on a hydrophilic porous membrane side of the selective permeable membrane and the second treatment chamber is provided on the first protective membrane side of the selective permeable membrane.

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