Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8703901 | Transparent, highly heat-resistant polyimide precursor and photosensitive polyimide composition thereof | Dong Seok Kim, Yong Sik Ahn, Kyung Jun Kim | 2014-04-22 |
| 8232366 | Transparent, highly heat-resistant polyimide precursor and photosensitive polyimide composition thereof | Dong Seok Kim, Yong Sik Ahn, Kyung Jun Kim | 2012-07-31 |
| 6172127 | Preparation of polyimide foam | Kil-Yeong Choi, Jae-heung Lee, Sung-Goo Lee, Seung Su Kim | 2001-01-09 |
| 6162893 | Soluble polyimide resin having a dialkyl substituent for a liquid crystal alignment layer, the monomers and manufacturing methods thereof | Kil-Yeong Choi, Moon-Young Jin, Jin-Tae Jung, Jae Geun Park, Dae W. Ihm | 2000-12-19 |
| 6057379 | Method of preparing polyimide foam with excellent flexibility properties | Kil-Yeong Choi, Jae-heung Lee, Sung-Goo Lee, Seung Su Kim | 2000-05-02 |
| 6054554 | Soluble polyimide resin comprising polyalicyclic structure | Kil-Yeong Choi, Wenxi Huang | 2000-04-25 |
| 6046303 | Soluble polyimide resin having alkoxy substituents and the preparation method thereof | Kil-Yeong Choi, Moon-Young Jin, Jin-Tae Jung, Jeong-Ghi Koo, Jae Eun Cho | 2000-04-04 |
| 6031067 | Soluble polyimide resin and process of preparation of the same | Kil-Yeong Choi, Wenxi Huang | 2000-02-29 |
| 6013760 | Soluble polyimide resin for liquid crystal alignment layer and process of preparation of the same | Kil-Yeong Choi, Moon-Young Jin, Dae W. Ihm, Jae Min Oh | 2000-01-11 |
| 5955568 | Process for preparing polyamideimide resins by direct polymerization | Kil-Yeong Choi, Dong-Hack Suh, Young-Taik Hong, Moon-Young Jin | 1999-09-21 |
| 5824766 | Polyamideamic acid resin prepolymers, high heat resistant polyamideimide foams prepared therefrom, and processes for preparing them | Kil-Yeong Choi, Moon-Young Jin, Young-Taik Hong | 1998-10-20 |
| 5532334 | Process for preparing polyamideimide resins having high molecular weight | Kil-Yeong Choi, Dong-Hack Suh, Young-Taik Hong, Jong Chan Won | 1996-07-02 |
| 5521276 | Polyamideimide resins containing isophorone diamine structures | Kil-Yeong Choi, Jae-heung Lee, Moon-Young Jin, Young-Taik Hong | 1996-05-28 |
| 5243010 | Aromatic polyamide containing pendant silyl groups | Kil-Yeong Choi | 1993-09-07 |
| 5241037 | Nadimide-terminated polyarylates and cured polyarylate resins | Kil-Yeong Choi, Sam Kwon Choi | 1993-08-31 |