DS

Dongchul Seo

KC Korea Kumho Petrochemical Co.: 2 patents #116 of 342Top 35%
Overall (All Time): #2,192,203 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6753126 Polymer for chemically amplified resist and chemically amplified resist composition containing the same Joohyeon Park, Jongbum Lee, Hyunpyo Jeon, Seongju Kim 2004-06-22
6639036 Acid-labile polymer and resist composition Joohyeon Park, YoungTaek Lim, Hyunsang Joo, SeongDuk Cho, Seongju Kim 2003-10-28