Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5874802 | Cathode body, electron gun, and cathode ray tube employing a ferroelectric emitter | Jong-Seo Choi, Kyu-Nam Joo | 1999-02-23 |
| 5821683 | Cathode assembly having thermion emitter of cermet pallet | Kyu-Nam Joo, Jong-Seo Choi, Geun-Bae Kim, Sang Won Lee | 1998-10-13 |
| 5789113 | Active material for nickel electrode and nickel electrode having the same | Kyu-Nam Joo, Jong-Seo Choi, Geun-Bae Kim, Sang Won Lee | 1998-08-04 |
| 5773922 | Direct heating cathode and process for producing such | Kwang-Min Lee, Kyu-Nam Joo, Jong-Seo Choi, Geun-Bae Kim | 1998-06-30 |
| 5708321 | Cathode for electron tube having an electron-emission layer including a lanthanum-magnesium-manganese oxide | Kyu-Nam Joo, Jong-Seo Choi, Geun-Bae Kim, Sang Won Lee | 1998-01-13 |
| 5684357 | Thermion emitting oxide cathode and method for making the same | Kwang-Min Lee, Kyu-Nam Joo, Jong-Seo Choi, Geun-Bae Kim, Sang Won Lee | 1997-11-04 |
| 5681665 | Negative electrode for alkaline storage battery | Sang Won Lee, Hwang-chul Bae, Geun-Bae Kim, Jong-Seo Choi, Kyu-Nam Joo | 1997-10-28 |
| 5679130 | Hydrogen occluded alloy and process for producing such | Kwang-Min Lee, Kyu-Nam Joo, Jong-Seo Choi, Geun-Bae Kim, Sang Won Lee | 1997-10-21 |
| 5677592 | Cathode ray tube | Jong-Seo Choi, Kyu-Nam Joo | 1997-10-14 |
| 5620813 | Positive nickel electrode for alkaline storage battery | Sang Won Lee, Hwang-chul Bae, Geun-Bae Kim, Jong-Seo Choi, Kyu-Nam Joo | 1997-04-15 |