Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8308913 | Apparatus for recovering acrylic acid | Seong-Pil Kang, Seok Kwan Choi, Kyoung-Su Ha, Jun Seok Ko, Young Bae Kim | 2012-11-13 |
| 8142742 | Method of producing unsaturated acid from olefin | Jun Seok Ko, Kyoung-Su Ha, Seong-Pil Kang, Seok Hwan Choi, Young Bae Kim | 2012-03-27 |
| 7816559 | Method of producing unsaturated acid from olefin | Jun Seok Ko, Kyoung-Su Ha, Seong-Pil Kang, Seok Hwan Choi, Young Bae Kim | 2010-10-19 |
| 7632968 | Method for producing (meth) acrylic acid | Seong-Pil Kang, Seok Hwan Choi, Kyoung-Su Ha, Jun Seok Ko, Young Bae Kim +1 more | 2009-12-15 |
| 7612231 | Method for recovering acrylic acid | Seong-Pil Kang, Seok Hwan Choi, Kyoung-Su Ha, Jun Seok Ko, Young Bae Kim | 2009-11-03 |
| 7608734 | Method of producing unsaturated acid in fixed-bed catalytic partial oxidation reactor with high efficiency | Kyoung-Su Ha, Jun Seok Ko, Seong-Pil Kang, Seok Hwan Choi, Young Bae Kim | 2009-10-27 |
| 7591585 | Temperature measuring device | Kyoung-Su Ha, Jun Seok Ko, Seong-Pil Kang, Seok Hwan Choi, Sang Youn Lee +1 more | 2009-09-22 |
| 7495065 | Method of preparing polycarbonate resin | Jong-Hun Kim, Sung Kyou Park, Mijeung Hong | 2009-02-24 |
| 7438871 | Catalytic oxidation reactor with enhanced heat exchanging system | Kyoung-Su Ha, Geon Yong Kim, Seong-Pil Kang | 2008-10-21 |
| 7417161 | Continuous method for preparing aromatic carbonate using a heterogeneous catalyst and a reaction apparatus for the same | Ja-Hun Kwak, Moo Ho Hong, Mi-Jeung Hong | 2008-08-26 |
| 7368521 | Method of producing modified polycarbonate using spray-crystallizing method | Mijeung Hong, Jong-Hun Kim, Sung Kyou Park | 2008-05-06 |
| 7339021 | Method for preparing polycarbonate resin | Eun-duck Park, Mi-Jeung Hong, Jong-Hun Kim | 2008-03-04 |
| 7332559 | Method of preparing polycarbonate resin | Mijeung Hong, Jong-Hun Kim, Sung Kyou Park | 2008-02-19 |
| 7321016 | Method of producing styrene polymers using high speed catalytic dispersion technology | Mooho Hong, Sang Hoon Lee | 2008-01-22 |
| 7319169 | Method for producing (meth) acrylic acid | Seong-Pil Kang, Seok Hwan Choi, Kyoung-Su Ha, Geon Yong Kim, Sang Youn Lee +2 more | 2008-01-15 |
| 7262324 | Method of producing unsaturated acid in fixed-bed catalytic partial oxidation reactor with enhanced heat control system | Kyoung-Su Ha, Geon Yong Kim, Seong-Pil Kang | 2007-08-28 |
| 7238836 | Method of producing unsaturated aldehyde and unsaturated acid in fixed-bed catalytic partial oxidation reactor with enhanced heat control system | Kyoung-Su Ha, Geon Yong Kim, Seong-Pil Kang, Seok Hwan Choi | 2007-07-03 |
| 7148312 | Preparation method of high molecular weight polycarbonate resin | Jong-Hun Kim, Eun-duck Park, Mi-Jeung Hong | 2006-12-12 |
| 7084220 | Catalyst system for preparing styrene polymer and method for preparing of styrene polymer using the same | Moo Ho Hong, Young-Suk Son | 2006-08-01 |
| 7084232 | Method for preparing high molecular weight polycarbonate | Jong-Hun Kim, Eun-duck Park, Mi-Jeung Hong | 2006-08-01 |
| 7073519 | Facility parts cleaning solution for processing of (meth)acrylic acid and/or (meth)acrylic esters and cleaning method using said cleaning solution | Seok Hwan Choi, Seong-Pil Kang, Kyoung-Su Ha, Geon Yong Kim | 2006-07-11 |
| 5645696 | Process for preparing unsaturated carboxylic acid esters and apparatus for preparing the same | Kwang Ho Park, Hwa Myung Joo, Han Sun Lee | 1997-07-08 |