Granted Patent
Utility
US 6,471,995 · App. 09/671,426
Apparatus and method for preparing microparticles using liquid-liquid extraction
Inventor:
J. Michael Ramstack
Patented Case
View Patent ↗
Granted: Oct 29, 2002
Filed: Sep 27, 2000
Inventor
J. Michael Ramstack
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.