Issued Patents All Time
Showing 51–55 of 55 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7871736 | Polymer membrane for fuel cell, method of preparing same, and membrane-electrode assembly for fuel cell comprising same | Sung-Guk An, Min-Kyu Song, Young-Mi Park, You-Mee Kim, Ho-Jin Kweon +1 more | 2011-01-18 |
| 7816416 | Polymer membrane for fuel cell, method of preparing the same, membrane-electrode assembly including the same, and fuel cell system including the same | In-Hyuk Son, Chan Gyun Shin, Chang-Bong Lee | 2010-10-19 |
| 7659318 | Polymer membrane for fuel cell, method of preparing the same, membrane-electrode assembly including the same, and fuel cell system including the same | In-Hyuk Son, Chan Gyun Shin, Chang-Bong Lee | 2010-02-09 |
| 7023529 | Method for overlay measurement in exposure process | — | 2006-04-04 |
| 6888261 | Alignment mark and exposure alignment system and method using the same | Won-sang Song, Seong-Il Kim, Chang-Hoon Lee, Choung-Hee Kim | 2005-05-03 |