Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9972785 | Spiro-type compound and organic light emitting element comprising same | Yongbum Cha, Jin Joo Kim, Sang Duk SUH | 2018-05-15 |
| 9960357 | Spiro-type compound and organic light emitting element comprising same | Yongbum Cha, Jin Joo Kim, Sang Duk SUH | 2018-05-01 |