US Patent Issued to SEMES on Dec. 9 for "Fireproof door apparatus, fireproof structure and substrate treating facility" (South Korean Inventors)

ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,589, issued on Dec. 9, was assigned to SEMES Co. LTD. (Cheonan-si, South Korea).

"Fireproof door apparatus, fireproof structure and substrate treating facility" was invented by Min Beom Kim (Seoul, South Korea), Eun Sang Yoon (Suwon-si, South Korea), Nam Ho Chung (Seoul, South Korea) and Doo Hyun Baek (Hwaseong-si, South Korea).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided are a fireproof door apparatus, a fireproof structure, and a substrate treating facility.The fireproof door apparatus includes a fireproof shutter opening and closing a passage connecting two spaces, a release unit installed on one side of the passage and in the fireproof ...