Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6390877 | Method for manufacturing an electron gun including a metal layer between a base metal and an electron emitting layer | Yoon-Chang Kim, Jong-Seo Choi | 2002-05-21 |
| 6255764 | Electron gun cathode with a metal layer having a recess | Jong-Seo Choi, Yoon-Chang Kim | 2001-07-03 |
| 6140753 | Cathode for an electron gun | Jong-Seo Choi, Yoon-Chang Kim | 2000-10-31 |
| 6054800 | Cathode for an electron gun | Jong-Seo Choi, Yoon-Chang Kim | 2000-04-25 |