Inventor

CHANG JAY HYOK

KR13 patents

⚠️ This page may combine multiple inventors who share the name “CHANG JAY HYOK”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

LG CHEMICAL LTD

6 patents

US5962468AOct 5, 1999

7-(4-aminomethyl-3-methyloxyiminopyrrolidin-1-yl)-1- cyclopropyl-6-fluoro-4-oxo-1, 4-dihydro-1, 8-naphthyridine-3-carboxylic acid and the process for the preparation thereof

LG CHEMICAL LTD30 citations95

US5869670AFeb 9, 1999

7-(4-aminomethyl-3-methyloxyiminopyrrolidin-1-yl)-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acid and the process for the preparation thereof

LG CHEMICAL LTD46 citations95

US5776944AJul 7, 1998

7-(4-aminomethyl-3-methyloxyiminopyrroplidin-1-yl)-1-cyclopropyl-6-flu oro-4-oxo-1,4-dihydro-1,8-naphthyridine-3-carboxylic acid and the process for the preparation thereof

LG CHEMICAL LTD38 citations92

US6307059B1Oct 23, 2001

Process for preparing a protected 4-aminomethyl-pyrrolidi-3-one

LG CHEMICAL LTD22 citations90

US5840916ANov 24, 1998

Quinoline carboxylic acid derivatives having 7-(4-amino-methyl-3-oxime) pyrrolidine substituent and processes for preparing thereof

LG CHEMICAL LTD7 citations72

US5698570ADec 16, 1997

Quinoline carboxylic acid derivatives having 7-(4-amino-methyl-3-oxime)pyrrolidine substituent and processes for preparing thereof

LG CHEMICAL LTD7 citations70

LG LIFE SCIENCES LTD

5 patents

US6723734B2Apr 20, 2004

Process for preparing 7-chloro-1-cyclopropyl-6-fluoro-4-oxo-1, 4-dihydro-1,8-naphthyridine-3-carboxylic acid

LG LIFE SCIENCES LTD0 citations39

LG CHEM INVESTMENT LTD

2 patents

US6630593B1Oct 7, 2003

Process for preparing a 1-substituted 5-hydroxymethyl imidazole

LG CHEM INVESTMENT LTD0 citations48

US6559320B2May 6, 2003

Process for preparing 4-substituted 1H-pyrrole-3-carboxylic acid ester

LG CHEM INVESTMENT LTD0 citations32