About 2 Trademarks found that are owned by Park Junsuk

Acoustic guitars, electric guitars, bass guitars, pianos, drums, violins, mandolins, banjos, resonator guitars, organs, harmonicas, accordions, harps, flutes, melodeons, capos for guitars, pedals for guitars, machine heads for guitars, strings for musical instruments, tuners for musical instruments

The color(s) black is/are claimed as a feature of the mark.

guitars, electronic guitars, pianos, violins, mandolins, organs, harmonicas, accordions, harps, flutes, drums, strings for musical instruments, melodeons