Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5698937 | Cathode for electron tube | Gyu-nam Ju, Jong-Seo Choi, Keun Bae Kim, Kwi-Seok Choi | 1997-12-16 |
| 5684357 | Thermion emitting oxide cathode and method for making the same | Kyu-Nam Joo, Jong-Seo Choi, Geun-Bae Kim, Kwi-seuk Choi, Sang Won Lee | 1997-11-04 |
| 5679130 | Hydrogen occluded alloy and process for producing such | Kyu-Nam Joo, Jong-Seo Choi, Geun-Bae Kim, Kwi-seuk Choi, Sang Won Lee | 1997-10-21 |