Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6800990 | Cathode material including rare earth metal used as electron emission source for electron beam apparatus | Jong-Seo Choi, Hyek-Bok Lee, Kyu-Nam Joo | 2004-10-05 |
| 6791251 | Metal cathode and indirectly heated cathode assembly having the same | Dong-Kyun Seo, Jong-Seo Choi, Kyoung-Cheon Son, Kyu-Nam Joo, Sung-Hwan Moon +2 more | 2004-09-14 |
| 6787796 | Organic electroluminescent display device and method of manufacturing the same | Young Rag Do, Jin-Woo Park, Young-Woo Song | 2004-09-07 |
| 6762544 | Metal cathode for electron tube | Kyu-Nam Joo, Dong-Kyun Seo, Bu-Chul Sin | 2004-07-13 |