Granted Patent
Utility
US 4,935,019 · App. 07/189,078
Radiopaque polymeric composition
Inventor:
Stephen Papp, Jr.
Patented Case
View Patent ↗
Granted: Jun 19, 1990
Filed: May 2, 1988
Inventor
Stephen Papp, Jr.
Assignee (at issue)
Johnson & Johnson Medical GMBH
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.