| [2009.3-Present ] |
| President, Inha Univ. |
|
| [2006.3-2009.2] |
| Vice President, Inha Univ. |
|
| [2005.3-2006.2] |
| Dean of Graduate School, Inha Univ. |
|
| [2003.1-2003.12] |
| President, Korean Union of Chemical Science & Technology Societies. |
|
| [2001.1-2001.12] |
| President, Korean Society of Industrial & Eng. Chemistry. |
|
| [2000.9-2002.8] |
| Dean, College of Natural Science, Inha Univ. |
|
| [1999.2-2000.1] |
| Director, Korea Science & Engineering Foundation. |
|
| [1998.1-1998.12] |
| Vice President, Korean Chemical Society. |
|
| [1995.3-1997.2] |
| Director, Basic Science Research Institute, Inha Univ. |
|
| [1987.8-1988.8] |
| Dean of Academic Affairs, Inha Univ. |
|
| [1986.3-1987.7] |
| Associate Dean of Academic Affairs, Inha Univ. |
|
| [1985-1986] |
| Visiting Scientist, Institute of Molecular Science, Japan. |
|
| [1982.3-Present] |
| Professor, Dept. Chem. College of Natural Science, Inha Univ. |
|
| [1978.9-1979.8] |
| Visiting Scholar, Dept. Chem., UC Berkeley. |
|
| [1978.3-1978.8] |
| Acting Dean of Academic Affairs, Ajou Inst. Tech. |
|
| [1975.3-1982.2] |
| Assistant Prof. & Associate Prof. Dept. Chem. Eng., Ajou Inst. Tech. |