Granted Patent
Utility
US 4,192,859 · App. 05/946,976
Contrast media containing liposomes as carriers
Inventors:
George B. Mackaness, Joseph P. Hou
Patented Case
View Patent ↗
Granted: Mar 11, 1980
Filed: Sep 29, 1978
Inventors
George B. Mackaness
Joseph P. Hou
Assignee (at issue)
E.R. SQUIBB & SONS. 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.