ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,409,724, issued on Sept. 9, was assigned to HANON SYSTEMS (Daejeon, South Korea).

"Air flap having mixed-type door structure" was invented by Sung-Wook Park (Daejeon, South Korea), Ok Ryul Min (Daejeon, South Korea), Won Sub So (Daejeon, South Korea) and Yong Min Jo (Daejeon, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to an air flap having a mixed-type door structure. The objective of the present invention is to provide an air flap having a mixed-type door structure. In terms of a door structure of an external air flap provided matching a bumper cover, an upper door, for which it is difficult to secure an u...