ALEXANDRIA, Va., June 2 -- United States Patent no. 12,644,197, issued on June 2, was assigned to DONG-EUI UNIVERSITY INDUSTRIAL-ACADEMIC COOPERATION FOUNDATION (Busan, South Korea).

"Superhydrophobic and superoleophobic surface on 5,000 series aluminum alloy in anodic oxidation process without pre-patterning step" was invented by Chanyoung Jeong (Busan, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a method for simultaneously achieving a superhydrophobic and superoleophobic surface on 5,000 series aluminum alloy in an anodic oxidation process without a pre-patterning step, wherein the uniform anodic oxide film can be produced even without a pre-patterning step, ...