Issued Patents 2004
Showing 1–1 of 1 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, Kyu-Nam Joo, Yoon-Chang Kim | 2004-10-05 |
HL
Hyek-Bok Lee
Overall (2004): #205,272 of 270,089Top 80%
1
Patents 2004