Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12308499 | Cutting apparatus and method of manufacturing MEA for fuel cell | Yoosuk Hong | 2025-05-20 |
| 12132189 | System and method for manufacturing positive electrode for secondary battery | SeungJun Min, Hyoup Je Cho | 2024-10-29 |
| 11931705 | System and method for manufacturing dispersion liquid of carbon nanotube | Hannah Song, Daehyeon Joung | 2024-03-19 |
| 11870119 | Heat treatment apparatus of MEA for fuel cell | Yoosuk Hong | 2024-01-09 |
| 11837765 | Cutting apparatus and method of manufacturing MEA for fuel cell | Yoosuk Hong | 2023-12-05 |
| 11495781 | System and method for manufacturing positive electrode for secondary battery | SeungJun Min, Hyoup Je Cho | 2022-11-08 |
| 11251456 | Heat treatment apparatus of MEA for fuel cell | Yoosuk Hong | 2022-02-15 |
| 11217798 | Hot press device and method of hot pressing membrane-electrode assembly of fuel cell | Jong Cheol Ahn | 2022-01-04 |
| 11205791 | Apparatus for inspecting stack assembly | Hee Seung Hong | 2021-12-21 |
| 10957931 | Membrane electrode assembly manufacturing device and manufacturing method thereof | Jongcheol Ahn, Yongmin Kim, Ki Sub Lee | 2021-03-23 |
| 10439243 | Membrane electrode assembly manufacturing device and manufacturing method of membrane electrode assembly | Jongcheol Ahn, Yongmin Kim, Ki Sub Lee | 2019-10-08 |
| 10128521 | Heat treatment device of membrane-electrode assembly (MEA) for fuel cell | Jong Cheol Ahn | 2018-11-13 |
| 10103393 | Hot press device and method of hot pressing membrane-electrode assembly of fuel cell | Jong Cheol Ahn | 2018-10-16 |
| 9832564 | Multi-pole earphone plug and adjustable multi-pole audio connector including the same | Juhee CHANG, Sangju Lee, Cheol Yong Park, Ho-Chul Hwang | 2017-11-28 |
| 9741334 | Active noise cancellation in audio output device | Cheol Yong Park, Ju-Hee CHANG, Se Jeong Na, Sung-Kyu Park, In Seok SHIM +1 more | 2017-08-22 |
| 9179218 | Mobile device for multi-channel sound collection and output using common connector, and driving method thereof | Ju-Hee CHANG, Hyo Sun Jang | 2015-11-03 |
| 8448321 | Press-fit device | Sung-Min Yook, Young Seock Lee | 2013-05-28 |
| 8369813 | Apparatus and method for reducing cross-talk between audio channels in a mobile terminal | Ki-Won Kim, Ju-Hee CHANG, Sung-Hwan Ko | 2013-02-05 |
| 6660058 | Preparation of silver and silver alloyed nanoparticles in surfactant solutions | Seong-geun Oh, Sung-Chul Yi, Seung-Il Shin, Dae Wook Kim | 2003-12-09 |