Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6635404 | Structure and process method of gamma gate for HEMT | Sang Soo Choi, Jim H. Lee, Doh Hoon Kim, Kag Hyeon Lee, Dae-Yong Kim | 2003-10-21 |
| 6542317 | Optical system for crystallization tool | Kag Hyeon Lee, Doh Hoon Kim, Sang Soo Choi, Dae-Yong Kim | 2003-04-01 |
| 6101047 | Catadioptric optical system for lithography | Jong Soo Kim, Kag Hyeon Lee, Doh Hoon Kim, Sang Soo Choi, Hyung-Joun Yoo | 2000-08-08 |
| 6057970 | Apparatus for enhancing depth of focus using birefringent material | Doh Hoon Kim, Kag Hyeon Lee, Sang Soo Choi, Bo Woo Kim | 2000-05-02 |
| 5796804 | X-ray mask structure for reducing the distortion of a mask | Young-Jin Jeon, Sang Soo Choi, Jong Hyun Lee, Hyung-Joun Yoo | 1998-08-18 |