ALEXANDRIA, Va., April 15 -- United States Patent no. 12,599,852, issued on April 14, was assigned to SSENG Co. LTD. (Busan, South Korea).
"Filtration device" was invented by Kyu Tae Kim (Busan, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A filtration device includes: a filtration tank having a raw water inlet pipe and a backwash water discharge pipe connected to an upper portion thereof, and a treated water discharge pipe, a backwash water inlet pipe, and a backwash air inlet pipe connected to a lower portion thereof; a strainer provided in the filtration tank and having a plurality of water passage holes formed on a side surface thereof and a lower side in communication with the treated wate...