Granted Patent
Utility
US 5,548,035 · App. 08/238,083
Biodegradable copolymer as drug delivery matrix comprising polyethyleneoxide and aliphatic polyester blocks
Inventors:
Ho Hyung Kim, Guw-Dong Yeo, Yil-Woong Yi
Patented Case
View Patent ↗
Granted: Aug 20, 1996
Filed: May 4, 1994
Inventors
Ho Hyung Kim
Guw-Dong Yeo
Yil-Woong Yi
Assignee (at issue)
SAMYANG CORPORATION
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.