Granted Patent
Utility
US 5,059,421 · App. 07/370,650
Preparation of targeted liposome systems of a defined size distribution
Inventors:
Helen Loughrey, Pieter R. Cullis, Marcel Bally, Lewis S. L. Choi, Kim F. Wong
Patented Case
View Patent ↗
Granted: Oct 22, 1991
Filed: Jun 23, 1989
Inventors
Helen Loughrey
Pieter R. Cullis
Marcel Bally
Lewis S. L. Choi
Kim F. Wong
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.