Granted Patent
Utility
US 6,290,983 · App. 09/578,717
Preparation of biodegradable, biocompatible microparticles containing a biologically active agent
Inventors:
Michael E. Rickey, J. Michael Ramstack, Danny H. Lewis
Patented Case
View Patent ↗
Granted: Sep 18, 2001
Filed: May 26, 2000
Inventors
Michael E. Rickey
J. Michael Ramstack
Danny H. Lewis
Assignee (at issue)
Alkermes Controlled Therapeutics, Inc.
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.