Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9451736 | High load and high precision polygonal guide | Choong-rae Cho, Min Hong | 2016-09-20 |
| 6914147 | Polyalkylene oxide porogens having hyper-branches and low dielectric-constant insulators using them | Changjin Lee, Yongku Kang, Jong Goo Kang, Hee Jung Kim, Sang Il Seok +2 more | 2005-07-05 |
| 6582879 | Reactive photo acid-generating agent and heat-resistant photoresist composition with polyamide precursor | Kil-Yeong Choi, Jong Chan Won, Sang Yeol Choi | 2003-06-24 |
| 6433184 | Polyamide-imide having head-to-tail backbone | Kil-Yeong Choi, Jae-heung Lee, Young-Taik Hong, Kyoung Su CHOI, Ho-Jin Park | 2002-08-13 |
| 6162893 | Soluble polyimide resin having a dialkyl substituent for a liquid crystal alignment layer, the monomers and manufacturing methods thereof | Kil-Yeong Choi, Mi-Hie Yi, Jin-Tae Jung, Jae Geun Park, Dae W. Ihm | 2000-12-19 |
| 6046303 | Soluble polyimide resin having alkoxy substituents and the preparation method thereof | Kil-Yeong Choi, Mi-Hie Yi, Jin-Tae Jung, Jeong-Ghi Koo, Jae Eun Cho | 2000-04-04 |
| 6013760 | Soluble polyimide resin for liquid crystal alignment layer and process of preparation of the same | Kil-Yeong Choi, Mi-Hie Yi, Dae W. Ihm, Jae Min Oh | 2000-01-11 |
| 5955568 | Process for preparing polyamideimide resins by direct polymerization | Kil-Yeong Choi, Dong-Hack Suh, Mi-Hie Yi, Young-Taik Hong | 1999-09-21 |
| 5824766 | Polyamideamic acid resin prepolymers, high heat resistant polyamideimide foams prepared therefrom, and processes for preparing them | Kil-Yeong Choi, Mi-Hie Yi, Young-Taik Hong | 1998-10-20 |
| 5693744 | Amorphus polyamides having second order nonlinear optical property, and method for preparing them | Kil-Yeong Choi, Young-Wun Kim | 1997-12-02 |
| 5521276 | Polyamideimide resins containing isophorone diamine structures | Kil-Yeong Choi, Mi-Hie Yi, Jae-heung Lee, Young-Taik Hong | 1996-05-28 |