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:
Nov. 23, 2021
Filed:
Sep. 13, 2019
Applicant:
University of South Carolina, Columbia, SC (US);
Inventors:
Laura A. Murdock, Columbia, SC (US);
Fei Huang, West Columbia, SC (US);
Lihui Wang, Emeryville, CA (US);
Brian C. Benicewicz, Columbia, SC (US);
Assignee:
University of South Carolina, Columbia, SC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 5/22 (2006.01); B01D 67/00 (2006.01);
U.S. Cl.
CPC ...
C08J 5/2256 (2013.01); B01D 67/0011 (2013.01); B01D 67/0013 (2013.01); B01D 67/0093 (2013.01); B01D 2323/30 (2013.01); B01D 2323/40 (2013.01); B01D 2325/02 (2013.01); B01D 2325/42 (2013.01); C08J 2379/04 (2013.01);
Abstract
A novel process for making PBI films starting from gel PBI membranes polymerized and casted in the PPA process wherein acid-imbibed gel PBIs are neutralized in a series of water baths and undergo controlled drying in association with a substrate material, yielding a PBI film without the use of organic solvents.