Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9802268 | Projection welding device | Do Woon Cho, Chae Won Lim | 2017-10-31 |
| 9339010 | Animal training apparatus with radio transceiver | — | 2016-05-17 |
| 9176097 | Welded portion quality determining system | — | 2015-11-03 |
| 7476622 | Method of forming a contact in a semiconductor device | Young-Hee Kim, Young-hwan Yun, Doo-Heun Baek | 2009-01-13 |
| 6732750 | Semiconductor wafer cleaning apparatus and method of using the same | Seung-Kun Lee, Young-hwan Yun, Gyu-hwan Kwag | 2004-05-11 |
| 6460269 | Wafer dryer comprising revolving spray nozzle and method for drying wafers using the same | Gyu-hwan Kwag | 2002-10-08 |