DL

Doo-Byung Lee

YU Yuhan: 7 patents #21 of 274Top 8%
Overall (All Time): #676,071 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
12227478 Processes for preparing (3R,4R)-1-benzyl-N,4-dimethylpiperidin-3-amine or a salt thereof and processes for preparing tofacitinib using the same Sang Ho Oh, Kyoung-Chan Kwon, Sang Won Kim, Hyo-Ick Hwang, Kyeong-Sill Lee +4 more 2025-02-18
11623925 Processes for preparing a diaminopyrimidine derivative or acid addition salt thereof Ja-Heouk Khoo, Jun-Sup Lee, Hyun Ju, Woo-Seob Shin 2023-04-11
11434224 Processes for preparing a diaminopyrimidine derivative or acid addition salt thereof Ja-Heouk Khoo, Jun-Sup Lee, Hyun Ju, Woo-Seob Shin 2022-09-06
11198684 Intermediates useful for the synthesis of a selective inhibitor against protein kinase and processes for preparing the same Sang Ho Oh, Ja-Heouk Khoo, Jong Chul LIM, Jung A Lee, Jun-Sup Lee +3 more 2021-12-14
10858353 Intermediates useful for the synthesis of aminopyrimidine derivatives, process for preparing the same, and process for preparing aminopyrimidine derivatives using the same Sang Ho Oh, Ja-Heouk Khoo, Jong Chul LIM, Jung A Lee, Jun-Sup Lee +3 more 2020-12-08
7521565 Process for preparing 1,2,3,9-tetrahydro-9-methyl-3-[(2-methyl-1H-imidazole-1-yl)methyl]-4H-carbazol-4-one or its salt Tai-Au Lee, Sang Sun Park, Sang-Jung Kim 2009-04-21
6706888 Processes for preparing imidazole derivatives and salts thereof Jeong-Seok Chae, Tai-Au Lee, Sang-Seon Park, Beom-Joo Maeng 2004-03-16