Granted Patent
Utility
US 4,876,258 · App. 07/226,487
Biphenylyl compounds
Inventors:
Wilhelm Kump, Peter Traxler
Patented Case
View Patent ↗
Granted: Oct 24, 1989
Filed: Aug 1, 1988
Inventors
Wilhelm Kump
Peter Traxler
Assignee (at issue)
Ciba-Geigy
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.