Issued Patents All Time
Showing 26–41 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8003237 | Perpendicular magnetic recording disk and manufacturing method thereof | Yoshiaki Sonobe, Teiichiro Umezawa, Masaki Uemura | 2011-08-23 |
| 7993765 | Perpendicular magnetic recording medium | Kinobu Osakabe, Junichi Horikawa | 2011-08-09 |
| 7973306 | Anthracene derivatives, organic electronic devices using anthracene derivatives, and electronic apparatuses comprising organic electronic device | Ji Eun Kim, Jae-Chol Lee, Hye-Young Jang, Tae Yoon Park, Sung Kil Hong +4 more | 2011-07-05 |
| 7955723 | Magnetic recording medium substrate and perpendicular magnetic recording medium | Teiichiro Umezawa, Yoshiaki Sonobe | 2011-06-07 |
| 7919196 | Emitting materials and organic light emitting device using the same | Sung-Jin Yeo, Hye-Young Jang | 2011-04-05 |
| 7745819 | Pyrene derivatives and organic electronic device using pyrene derivatives | Dong Hoon Lee, Jae-Soon Bae, Dae Woong Lee, Jung Bum Kim | 2010-06-29 |
| 7714323 | Organic thin film comprising pyrene derivatives | In Ho Hwang, Hyeon Choi, Min Jeong Lee, Dong Hoon Lee, Jae-Soon Bae +2 more | 2010-05-11 |
| 7538341 | Electronic device comprising organic compound having p-type semiconducting characteristics | Se-Hwan Son, Ok Hee Kim, Seok-Hee Yoon, Youn-Gu Lee, Jae-Soon Bae | 2009-05-26 |
| 7455917 | Organic compound and organic light emitting device using the same | Min Jeong Lee, Yeon Hwan Kim, Jun-Gi Jang | 2008-11-25 |
| 7452615 | Carbazole derivative and organic light emitting device using same | Jun-Gi Jang | 2008-11-18 |
| 7385095 | Indene derivatives and organic light emitting diode using the same | Dae Woong Lee, Jae-Soon Bae, Dong Hoon Lee | 2008-06-10 |
| 7357998 | Disk substrate for a perpendicular magnetic recording medium, perpendicular magnetic recording disk and manufacturing methods thereof | Junichi Horikawa | 2008-04-15 |
| 6998487 | Double-spiro organic compounds and organic electroluminescent devices using the same | Sehwan Son, Seokhee Yoon, Jae-Soon Bae, Youn-Gu Lee, Sung Gap Im +2 more | 2006-02-14 |
| 6984462 | Organic electroluminescent devices using double-spiro organic compounds | Sehwan Son, Seokhee Yoon, Jae-Soon Bae, Youn-Gu Lee, Sung Gap Im +2 more | 2006-01-10 |
| 6878469 | Material for transporting electrons and organic electroluminescent display using the same | Seok-Hee Yoon, Jae-Soon Bae, Youn-Gu Lee, Sung Gap Im, Jae-Chol Lee +3 more | 2005-04-12 |
| 6720573 | Electronic device comprising organic compound having p-type semiconducting characteristics | Se-Hwan Son, Ok Hee Kim, Seok-Hee Yoon, Youn-Gu Lee, Jae-Soon Bae | 2004-04-13 |