ALEXANDRIA, Va., March 31 -- United States Patent no. 12,590,431, issued on March 31, was assigned to KOAI Co. LTD. (Busan, South Korea).
"Portable oil skimmer" was invented by Kyung-taek Park (Busan, South Korea), Ho-sin Lee (Busan, South Korea), Seul-gi Ju (Gimhae-si, South Korea) and Dong-yeop Lee (Busan, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A portable oil skimmer includes a collection unit configured to collect spilled oil while floating on the surface of the ocean. The collection unit includes a main body configured to allow a first oil-skimming member to be rotatably mounted on the front end thereof, a second oil-skimming member to be rotatably mounted on the rear end thereof, and...