YJ

Yong Ju Ji

EC Em-Tech Co.: 12 patents #2 of 70Top 3%
📍 Daega-myeon, KR: #29 of 592 inventorsTop 5%
Overall (All Time): #405,196 of 4,157,543Top 10%
12
Patents All Time

Issued Patents All Time

Showing 1–12 of 12 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
11696059 Two-way receiver having front bass duct Jun Hee HAN 2023-07-04
11564026 Earphone having pressure equilibrium structure Jun Hee HAN, Young Woo Kim 2023-01-24
11528563 Hybrid receiver having fixing bracket for drivers Jun Hee HAN 2022-12-13
11463815 Yoke assembly for two-way receiver and two-way receiver having the same Jun Hee HAN, Jung-ho Kang 2022-10-04
11395060 Receiver having pressure equilibrium structure Young Woo Kim 2022-07-19
11363370 Receiver module integrated with duct Jun Hee HAN, Young Seok Noh 2022-06-14
11336983 Receiver module having pressure equilibrium structure Jung-ho Kang, Byung Jin Park 2022-05-17
11212616 Bonding structure of diaphragm for receiver Ji Hoon Kim, Young Woo Kim, Young Seok Noh, Chan Ho Jeong 2021-12-28
10899577 Automatic winding device Jung-ho Kang, Jun Hee HAN 2021-01-26
10667028 Electric device including microspeaker module with vibration function and wearable acoustic transducer Joong Hak Kwon 2020-05-26
10536771 Dynamic receiver with resonance protector for earphone Jung-ho Kang 2020-01-14