Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12227705 | Process of producing high-quality lube base oil by using refined oil fraction of waste lubricant | Young Wook Jeon, Jin Hee Ok, Kyung Seok Noh | 2025-02-18 |
| 11873456 | Process of producing high-quality lube base oil by using refined oil fraction of waste lubricant | Young Wook Jeon, Jin Hee Ok, Kyung Seok Noh | 2024-01-16 |
| 10544374 | Process for reducing haze in heavy base oil and hydroisomerization catalyst system having reduced haze | Do Kyoung Kim, Seung Woo Lee, Yoon Kyung Lee, Seon Ju Lim | 2020-01-28 |
| 10406510 | Catalyst containing metal cluster in structurally collapsed zeolite, and use thereof | Min Kee CHOI, Ju Hwan Im, Do Kyoung Kim, Tae Jin Kim, Seung Hoon Oh +1 more | 2019-09-10 |
| 10385277 | Catalyst for producing hydrogenated biodiesel and method of producing the same | Sang Il Lee, Hee Jung Jeon, Sang Jun Ju, Jae Wook Ryu, Gyung Rok Kim +1 more | 2019-08-20 |
| 10155219 | Catalyst containing metal cluster in structurally collapsed zeolite, and use thereof | Min Kee CHOI, Ju Hwan Im, Do Kyoung Kim, Tae Jin Kim, Seung Hoon Oh +1 more | 2018-12-18 |
| 9782760 | Method of preparing an activated EU-2 zeolite | Yoon Kyung Lee, Seung Woo Lee, Jae Suk Choi, Tae Jin Kim, Seon Ju Lim | 2017-10-10 |
| 9687828 | Activated EU-2 zeolite and use thereof | Yoon Kyung Lee, Seung Woo Lee, Jae Suk Choi, Tae Jin Kim, Seon Ju Lim | 2017-06-27 |
| 9550947 | Hydrocracking process of heavy hydrocarbon distillates using supercritical solvent | Jae Wook Ryu, Il Yong Jeong, Gyung Rok Kim, Sung-Bum Park, Eun Kyoung Kim +4 more | 2017-01-24 |
| 9283553 | Hydrocracking catalyst for preparing valuable light aromatic hydrocarbons from polycyclic aromatic hydrocarbons | Jae Hyun Koh, Sang Il Lee, Seung Woo Lee, Seung Hoon Oh, Jae Suk Koh +5 more | 2016-03-15 |
| 9127215 | Method for reducing the amount of organic acids in a hydrocarbon oil fraction | Jin Kyu Choi, Cheol-Woo Park, Tae Won Uhm, Il Yong Jeong, Ha Na Song +5 more | 2015-09-08 |
| 8980082 | Method of simultaneously removing sulfur and mercury from hydrocarbon material using catalyst by means of hydrotreating reaction | Do Kyoung Kim, Sang Il Lee, Seung Hoon Oh, Woo Kyung Kim, Han Seung Pan +3 more | 2015-03-17 |
| 8962900 | Method for producing valuable aromatics and light paraffins from hydrocarbonaceous oils derived from oil, coal or wood | Hong Chan Kim, Yong Seung Kim, Sang Hun Oh, Hyuck-Jae Lee, Jae Suk Koh +9 more | 2015-02-24 |
| 8911613 | Method of simultaneously manufacturing high quality naphthenic base oil and heavy base oil | Kyung Seok Noh, Jae Wook Ryu, Do Hyoun Kim, Gyung Rok Kim, Seung Woo Lee +4 more | 2014-12-16 |
| 8912377 | Method for producing high value aromatics and olefin from light cycle oil produced by a fluidized catalytic cracking process | Cheol Joong Kim, Tae Jin Kim, Sung Won Kim, Sang Hun Oh, Sam Ryong Pakr +7 more | 2014-12-16 |
| 8834706 | Method for preparing lubricating base oils by using vacuum distilled deasphalted oil | Kyung Seok Noh, Jae Wook Ryu, Do Hyoun Kim, Gyung Rok Kim, Seung Woo Lee +4 more | 2014-09-16 |
| 8585889 | Process for manufacturing high quality naphthenic base oils | Chang Kuk Kim, Jee Sun Shin, Kyung Seok Noh, Ju Hyun Lee, Byoung In Lee +5 more | 2013-11-19 |
| 8506892 | Exhaust gas purifying device for diesel engine | Yong Woo Kim, Joon-Seok Min, Seong Ho Lee, Hong Seok Jung, Yun-Guen Cho +4 more | 2013-08-13 |
| 5968228 | Process for preparing cobalt metals using nitrogen reductant | Son-Ki Ihm, Dong Keun Lee | 1999-10-19 |