Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5990603 | Cathode structure with reduced capacitance | Chang-Seob Kim | 1999-11-23 |
| 5898262 | Cathode structure and electron gun for cathode ray tube using the same | Chang-Seob Kim | 1999-04-27 |
| 5852342 | Directly heated cathode structure | Chang-Seob Kim, Seok-bong Son, Sang Kyun Kim | 1998-12-22 |
| 5831379 | Directly heated cathode structure | Chang-Seob Kim, Dong-Gil Jang, Seok-Bong Shon | 1998-11-03 |
| 5703429 | Directly heated cathode structure | Chang-Seob Kim, Seok-bong Son, Sang Kyun Kim | 1997-12-30 |
| 5701052 | Directly heated cathode structure | Chang-Seob Kim, Seok-bong Son, Sang Kyun Kim | 1997-12-23 |
| 5668434 | Directly heated cathode for cathode ray tube | Chang-Seob Kim, Seok-bong Son, Sang Kyun Kim, Sang-uk Shin | 1997-09-16 |