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:
Mar. 20, 2018
Filed:
Jan. 31, 2014
Lingyun Liu, Tallmadge, OH (US);
Lingyun Liu, Tallmadge, OH (US);
THE UNIVERSITY OF AKRON, Akron, OH (US);
Abstract
A filter for the separation of oil and water from oil-water mixtures comprising a porous filter media, wherein the porous filter media has a zwitterionic polymer grafted or coated thereon. The zwitterionic polymers can be formed from zwitterionic monomers, the zwitterionic polymers having positive and negative charges in series on the same side chain; zwitterionic polymers formed from a mixture of cationic and anionic monomers, the zwitterionic polymers having positive and negative charges on two different side chains; and zwitterionic polymers formed from monomers with cationic-anionic pairs, the zwitterionic polymers having positive and negative charges in parallel on the same side chain.
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