Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9240559 | Phosphorescent compound and organic electroluminescent device using the same | In-Bum Song, Sung Hee Park | 2016-01-19 |
| 9045471 | Phosphorescent compound and organic electroluminescent device using the same | In-Bum Song, Sung Hee Park | 2015-06-02 |
| 8835020 | Blue fluorescent composition and organic electroluminescent device using the same | Seung Jae Lee, In-Bum Song, Jung Keun Kim, Do-Han Kim, Chun Gun Park +9 more | 2014-09-16 |
| 8436344 | Organic electroluminescent device | Jeong-Dae Seo, Kyung-Hoon Lee, Hee Jung Kim, Chun Gun Park | 2013-05-07 |
| 7847286 | Semiconductor device | Jong Geun Yoon, Myung Seop Kim, Sung Tae Kim | 2010-12-07 |
| 7737443 | Light emitting device and method of manufacturing the same | Hak Su Kim, Yoon-Heung Tak | 2010-06-15 |
| 7700201 | Organic electroluminescent device | Jeong-Dae Seo, Kyung-Hoon Lee, Hee Jung Kim, Chun Gun Park | 2010-04-20 |
| 7651788 | Organic electroluminescent device | Jeong-Dae Seo, Hee Jung Kim, Kyung-Hoon Lee, Myung Seop Kim, Chun Gun Park | 2010-01-26 |
| 7651787 | Organic electroluminescent device | Jeong-Dae Seo, Hee Jung Kim, Kyung-Hoon Lee, Myung Seop Kim, Chun Gun Park | 2010-01-26 |
| 7638794 | Organoelectroluminescent device having a substrate, a negative electrode, an organic electroluminescent layer, a buffer layer containing an adhesion-increasing porphyrinic compound and a cathode electrode | Jong Geun Yoon, Myung Seop Kim, Sung Tae Kim | 2009-12-29 |
| 7541097 | Organic electroluminescent device and method for fabricating the same | Jeong-Dae Seo, Hee Jung Kim, Kyung-Hoon Lee, Myung Seop Kim, Chun Gun Park | 2009-06-02 |
| 7531247 | Organic electroluminescent device | Myung Seop Kim, Jae-Man Lee, Sung Kim, Jong Geun Yoon, Seong-Joong Kim +2 more | 2009-05-12 |
| 7507485 | Organic electroluminescent device | Sung Koo Lee, Chun Gun Park, Jeong-Dae Seo, Myung Seop Kim | 2009-03-24 |
| 7285339 | Organic electroluminescent device with improved long-term stability | Jong Geun Yoon, Myung Seop Kim, Sung Tae Kim | 2007-10-23 |
| 6984463 | Organic electroluminescent device | — | 2006-01-10 |
| 6964730 | Purification apparatus and method | Kyung-Hoon Lee, Jeong-Dae Seo | 2005-11-15 |
| 6893744 | Organic electroluminescent display device | Myung Seop Kim | 2005-05-17 |
| 6844090 | Organic electroluminescent device | — | 2005-01-18 |
| 6663985 | Organic electroluminescent device with improved long-term stability | Jong Geun Yoon, Myung Seop Kim, Sung Tae Kim | 2003-12-16 |
| 6248458 | Organic electroluminescent device with improved long-term stability | Jong Geun Yoon, Myung Seop Kim, Sung Tae Kim | 2001-06-19 |