Granted Patent
Utility
US 6,358,525 · App. 09/343,425
Sustained release polymer blend for pharmaceutical applications
Inventors:
Jian-Hwa Guo, George William Skinner
Patented Case
View Patent ↗
Granted: Mar 19, 2002
Filed: Jun 30, 1999
Inventors
Jian-Hwa Guo
George William Skinner
Assignee (at issue)
HERCULES LLC
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.