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:
May. 09, 2023
Filed:
Mar. 20, 2020
Applicant:
Saudi Arabian Oil Company, Dhahran, SA;
Inventors:
Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/22 (2006.01); B01D 69/12 (2006.01); B01D 67/00 (2006.01); B01D 69/02 (2006.01); B01D 69/10 (2006.01); B01D 71/64 (2006.01); C10L 3/10 (2006.01);
U.S. Cl.
CPC ...
B01D 69/125 (2013.01); B01D 53/228 (2013.01); B01D 67/0006 (2013.01); B01D 67/0095 (2013.01); B01D 69/02 (2013.01); B01D 69/105 (2013.01); B01D 71/64 (2013.01); C10L 3/101 (2013.01); C10L 3/104 (2013.01); C10L 3/105 (2013.01); B01D 2323/30 (2013.01); B01D 2323/42 (2013.01); B01D 2325/04 (2013.01); C10L 2290/548 (2013.01);
Abstract
Methods and systems for producing and using multi-layer composite co-polyimide membranes, one method for producing including preparing a microporous or mesoporous membrane support material for coating; applying a sealing layer to the membrane support material to prevent intrusion into the membrane support material of co-polyimide polymer; applying a first permselective co-polyimide layer atop and in contact with the sealing layer; and applying a second permselective co-polyimide layer atop and in contact with the first permselective co-polyimide layer.