Granted Patent
Utility
US 5,871,709 · App. 08/179,552
Macrocyclic compounds as complexing compounds or agents, complexes of metal ions therewith and use thereof as contrast media for diagnostics and therapeutics
Inventors:
Heinz Gries, Hans-Joachim Weinmann, Johannes Platzek, Wolf-Rudiger Press, Hubert Vogler
Patented Case
View Patent ↗
Granted: Feb 16, 1999
Filed: Jan 10, 1994
Inventors
Heinz Gries
Hans-Joachim Weinmann
Johannes Platzek
Wolf-Rudiger Press
Hubert Vogler
Assignee (at issue)
SCHERING CORPORATION
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.