ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,551,836, issued on Feb. 17, was assigned to COWAY Co. LTD. (Gongju-si, South Korea).
"Air filter and air purifier comprising same" was invented by Yoon Hyuck Choi (Seoul, South Korea), Hyun Kyu Lee (Seoul, South Korea), Jong Cheol Kim (Seoul, South Korea), Seung Ki Kim (Seoul, South Korea), Sung Sil Kang (Seoul, South Korea), Ju Hyun Baek (Seoul, South Korea) and Chan Jung Park (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "An air filter comprises: a first filter frame in which a plurality of first chambers are formed; a second filter frame in which a plurality of second chambers are formed and which is arranged at the rear of the fi...