ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,727,971, issued on Sept. 8, was assigned to OSTEONIC Co. LTD (Seoul, South Korea).
"Maxillary skeletal expander and maxillary skeletal expanding system" was invented by Dong Won Lee (Seoul, South Korea), Ui Shik Chung (Bucheon-si, South Korea), Young Hoon Kwon (Seoul, South Korea) and Dong Uk Moon (Anyang-si, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a maxillary skeletal expander including: a first body coupled to a maxilla; a second body opposing the first body and coupled to the maxilla; a gap adjusting member with a first and second threaded portion provided on both sides of a main body part and respectively screwed to t...