Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6663961 | Process for preparation of polyester-based polymers | Hyun-Nam Cho, Sang Ho Bae | 2003-12-16 |
| 6525109 | Process of preparing polycarbonates using microwave | Kil-Yeong Choi, Jae-heung Lee, Young Chan Ko, Cheol-Hyun Kim, Kwang Soo Yoon +1 more | 2003-02-25 |
| 6423812 | Process of preparing polycarbonates | Young Chan Ko, Cheol-Hyun Kim, Kwang Soo Yoon, Seung Joo Kim, Kil-Yeong Choi +2 more | 2002-07-23 |
| 6323305 | Process for preparing polyethylene naphthalate based polymers by using NDCA or its derivates | Hyun-Nam Cho, Jae-Min Hong, Hyoung-Wook Lee, Young Chan Ko | 2001-11-27 |
| 6232432 | Process for the preparation of polycarbonates | Kil-Yeong Choi, Jae-heung Lee, Sung-Goo Lee, Sang Hyun Park, Young Chan Ko +1 more | 2001-05-15 |
| 6040417 | Process for preparing polyethylene naphthalate based polymers | Hyun-Nam Cho, Jae-Min Hong, Young Chan Ko, Young Jin Heo | 2000-03-21 |