Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5569571 | Process for preparing black matrix for a color tube by etching | Su-Yeon Cho, Seung-Joon Yoo | 1996-10-29 |
| 5290648 | Method for manufacturing a screen for a cathode ray tube | Min Ho Kim | 1994-03-01 |