Granted Patent
Utility
US 6,649,755 · App. 10/111,636
Process for preparing acarbose with high purity
Inventors:
Chung Il Hong, Kyung Hwan Kim, Byoung Taik Choi, Gang Sun Choi, Yong-Rack Choi
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: Apr 26, 2002
Inventors
Chung Il Hong
Kyung Hwan Kim
Byoung Taik Choi
Gang Sun Choi
Yong-Rack Choi
Assignee (at issue)
CHONG KUN DANG PHARMACEUTICAL CORP.
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.