Granted Patent
Utility
US 5,948,441 · App. 08/367,923
Method for size separation of particles
Inventors:
Robert P. Lenk, Anthony G. Durning, Robert J. Klimchak, Joel Portnoff, Michelle L. Tomsho
Patented Case
View Patent ↗
Granted: Sep 7, 1999
Filed: Jan 3, 1995
Inventors
Robert P. Lenk
Anthony G. Durning
Robert J. Klimchak
Joel Portnoff
Michelle L. Tomsho
Assignee (at issue)
The Liposome Company, 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.