ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,506,573, issued on Dec. 23, was assigned to LG Electronics Inc. (Seoul, South Korea).
"1X LTF sequence for 240MHz" was invented by Jinyoung Chun (Seoul, South Korea), Jinsoo Choi (Seoul, South Korea), Dongguk Lim (Seoul, South Korea) and Eunsung Park (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A wireless local area network (LAN) system wherein a transmitting station (STA) may generate a physical protocol data unit (PPDU), the transmitting STA may transmit the PPDU over a 240 MHz band, the PPDU may include a long training field (LTF) signal, and the LTF signal may be generated on the basis of an LTF sequence for the 240 MHz band."...