Granted Patent
Utility
US 4,780,558 · App. 06/827,117
Sulfone compounds
Inventors:
Kurt Burdeska, Kurt Weber, Dieter Reinehr
Patented Case
View Patent ↗
Granted: Oct 25, 1988
Filed: Feb 7, 1986
Inventors
Kurt Burdeska
Kurt Weber
Dieter Reinehr
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.