Inventor
WON JEONG-IM
KR9 patents
Patents
9 patentsUS6137010AOct 24, 2000
Method for preparing 4-nitrodiphenylamine and 4-nitrosodiphenylamine from carbanilide
KOREA KUMHO PETROCHEM CO LTD48 citations90
US5770774AJun 23, 1998
Method for preparing 2-methyl-1,4-naphthoquinone (vitamin K3)
KOREA KUMHO PETROCHEM CO LTD20 citations90
US6245943B1Jun 12, 2001
Method of preparing p-phenylenediamine
KOREA KUMHO PETROCHEM CO LTD7 citations72
US6156932ADec 5, 2000
Preparation of 4,4'-dinitrodiphenylamine from urea and nitrobenzene
KOREA KUMHO PETROCHEM CO LTD6 citations71
US5723675AMar 3, 1998
Method for preparing anthraquinones
KOREA KUMHO PETROCHEM CO LTD14 citations71
US6198001B1Mar 6, 2001
Manufacturing method for 4-nitrosoaniline from urea and nitrobenzene
KOREA KUMHO PETROCHEM CO LTD2 citations60
US6130362AOct 10, 2000
Method for preparing ethylbenzene from 4-vinylcyclohexene
KOREA KUMHO PETROCHEM CO LTD3 citations57
US6881865B2Apr 19, 2005
Method for preparing cyclohexyl phenyl ketone from 1,3-butadiene and acrylic acid
KOREA KUMHO PETROCHEM CO LTD0 citations49
US6552229B1Apr 22, 2003
Method for preparing 4-nitroso-substituted aromatic amine
KOREA KUMHO PETROCHEM CO LTD0 citations40