Inventor

Jay Hyok Chang

Inventor

Daejeon, KR

Overview

14→

Patents

1997–2010

Patent span

Chemistry

Primary field (CPC C)

Patents· 14 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C07Dprimary

C07DHeterocyclic compounds45%

A61PSpecific therapeutic activity of chemical compounds or medicinal preparations29%

Y02PClimate change mitigation technologies in the production or processing of goods10%

B43KImplements for writing or drawing6%

A61KPreparations for medical, dental or toiletry purposes3%

C07BGeneral methods of organic chemistry3%

C07CAcyclic or carbocyclic compounds3%

PatentTitleYear

7,700,617'Salt of naphthyridine carboxylic acid derivative'2010 7,687,629'Process for preparing 4-aminomethyl-3-alkoxyiminopyrrolidine methanesulfonate'2010 7,576,214'Process for preparing 7-chloro-1-cyclopropyl-6-fluoro-4-oxo-1, 4-dihydro-1,8-naphthyridine-3-carboxylic acid'2009 7,271,272'Process for preparing 4-aminomethyl-3-alkoxyiminopyrrolidine methanesulfonate'2007 6,723,734'Salt of naphthyridine carboxylic acid derivative'2004 6,630,593'Process for preparing a 1-substituted 5-hydroxymethyl imidazole'2003 6,559,320'Process for preparing 4-substituted 1H-pyrrole-3-carboxylic acid ester'2003 6,307,059'Process for preparing a protected 4-aminomethyl-pyrrolidi-3-one'2001 5,962,468'7-(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'1999 5,869,670'7-(4-aminomethyl-3-me thyloxyiminopyrrolidin-1-yl)-1-cyclopropyl-6-fluoro-4-oxo-1,4-dihydro-1,8 -naphthyridine-3-carboxylic acid and the process for the preparation thereof'1999 5,840,916'Quinoline carboxylic acid derivatives having 7-(4-amino-methyl-3-oxime) pyrrolidine substituent and processes for preparing thereof'1998 5,776,944'7-(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'1998 5,698,570'Quinoline carboxylic acid derivatives having 7-(4-amino-methyl-3-oxime)pyrrolidine substituent and processes for preparing thereof'1997 5,633,262'Quinoline carboxylic acid derivatives having 7-(4-amino-methyl-3-oxime) pyrrolidine substituent and processes for preparing thereof'1997

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1997–2001Patents assigned to LG CHEMICAL LTD (7)· patent assignee history

1997–2010Based in Daejeon, KR· patent location history

1999Based in Daejon, KR· patent location history

2003Patents assigned to LG CHEM INVESTMENT LTD (2)· patent assignee history

2003Based in Taejon, KR· patent location history

2004–2010Patents assigned to LG LIFE SCIENCES LTD (5)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
LG CHEMICAL LTD	7	1997–2001
LG LIFE SCIENCES LTD	5	2004–2010
LG CHEM INVESTMENT LTD	2	2003

Locations

Location	Patents	Span
Daejeon, KR	12	1997–2010
Taejon, KR	1	2003
Daejon, KR	1	1999