Granted Patent
Utility
US 5,980,864 · App. 07/671,041
1,4,7,10-tetraazacyclododecane butyltriols, processes for their production and pharmaceutical agents containing them
Inventors:
Johannes Platzek, Heinz Gries, Hanns-Joachim Weinmann, Gabriele Schuhmann-Giampieri, Wolf-Rudiger Press
Patented Case
View Patent ↗
Granted: Nov 9, 1999
Filed: Mar 19, 1991
Inventors
Johannes Platzek
Heinz Gries
Hanns-Joachim Weinmann
Gabriele Schuhmann-Giampieri
Wolf-Rudiger Press
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.