YJ

Yong Ju Ji

EC Em-Tech Co.: 1 patents #1 of 8Top 15%
📍 Daega-myeon, KR: #10 of 43 inventorsTop 25%
Overall (2024): #207,355 of 561,600Top 40%
1
Patents 2024

Issued Patents 2024

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
12137311 Earphone with duct unit dividing pressure equilibrium hole and back hole Jun Hee HAN, Young Seok Noh 2024-11-05