Granted Patent
Utility
US 6,440,721 · App. 09/870,209
Method for preparing an R- or S-form of &agr;-substituted heterocyclic carboxylic acid and a counter enantiomeric form of &agr;-substituted heterocyclic carboxylic acid ester thereto using enzyme
Inventors:
Ki-Nam Uhm, Sang Chul Lim, Jong Ho Lim
Patented Case
View Patent ↗
Granted: Aug 27, 2002
Filed: May 30, 2001
Inventors
Ki-Nam Uhm
Sang Chul Lim
Jong Ho Lim
Assignee (at issue)
SK HOLDINGS CO., LTD.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.