Issued Patents All Time
Showing 51–75 of 107 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10683251 | Apparatus and method for preparing bisphenol A | Tae Woo Kim, Sung Kyu Lee | 2020-06-16 |
| 10639562 | Solvent separation apparatus and solvent separation method | Sung Kyu Lee | 2020-05-05 |
| 10635306 | Four row overloaded QWERTY-like keypad layout | Hyun Woo Shin | 2020-04-28 |
| 10626072 | Method of preparing methyl tert-butyl ether | Sung Ho Lee, Sang Beom Lee, In Yong Jeong | 2020-04-21 |
| 10597469 | Method for recovering ethylene and vinyl-based comonomer | Dae Young Shin, Eun Jung Joo, Chang Hoe Heo, Sung Keun Jang | 2020-03-24 |
| 10591219 | Heat recovery apparatus | Tae Woo Kim, Sung Kyu Lee | 2020-03-17 |
| 10570223 | Stripping apparatus | Chang Hoe Heo, Eun Jung Joo, Dae Young Shin | 2020-02-25 |
| 10556191 | Distillation method | Si Nae Lee, Sung Kyu Lee, Sang Beom Lee, Sung Ho Lee, Jeong Seok Kim +4 more | 2020-02-11 |
| 10532968 | Method for purifying phenol | Si Nae Lee, Sung Kyu Lee | 2020-01-14 |
| 10493375 | Distillation device | Sung Kyu Lee | 2019-12-03 |
| 10486080 | Distillation device | Yeon Uk Choo, Sung Kyu Lee, Tae Woo Kim, Jong Suh Park | 2019-11-26 |
| 10464866 | Apparatus and method for purifying cumene | Sung Kyun Kim, Sung Kyu Lee | 2019-11-05 |
| 10457620 | System for producing phenol and bisphenol A including removal unit for removing methanol and acetone | Sang Beom Lee, Sung Kyu Lee, Sung Ho Lee, Sa Eun Park, In Yong Jeong | 2019-10-29 |
| 10442746 | Apparatus and method for preparing bisphenol A | Tae Woo Kim, Sung Kyu Lee | 2019-10-15 |
| 10392323 | Apparatus and method for purifying cumene | Sung Kyun Kim, Sung Kyu Lee | 2019-08-27 |
| 10384146 | Divided wall distillation column | Sung Kyu Lee, Sung Kyun Kim, Jong Ku Lee | 2019-08-20 |
| 10358403 | Method for recovering phenol and acetone from cracking reaction product of bisphenol-A residue | Sang Beom Lee, In Yong Jeong, Jong-Hui Park, Myeong Yeon Keum, Jeong Ho Kim +1 more | 2019-07-23 |
| 10355266 | Silicon nanostructure active materials for lithium ion batteries and processes, compositions, components and devices related thereto | Yimin Zhu, Chunsheng Du | 2019-07-16 |
| 10338810 | Four row overload QWERTY-like keypad layout | Hyun Woo Shin | 2019-07-02 |
| 10333872 | Linking screens and content in a user interface | Derek Michael Orr, David J. Los | 2019-06-25 |
| 10302335 | Heat recovery apparatus | Tae Woo Kim, Sung Kyu Lee | 2019-05-28 |
| 10294177 | Method for preparing ethylene with improved energy efficiency | Sung Kyun Kim, Sung Kyu Lee, Tae Woo Kim, Yeon Uk Choo, Sa Eun Park | 2019-05-21 |
| 10266461 | Apparatus and method for purifying cumene | Sung Kyun Kim, Sung Kyu Lee | 2019-04-23 |
| 10150720 | Device for preparing n-butanol | Sung Kyu Lee, Jong Ku Lee | 2018-12-11 |
| 10112122 | Device for preparing alkanol | Sung Kyu Lee, Jong Ku Lee | 2018-10-30 |