Granted Patent
Utility
US 5,149,717 · App. 07/795,227
Alkanophenones useful for treating allergies
Inventors:
Andreas von Sprecher, Andreas Beck, Bruno Schaub, Robert W. Lang
Patented Case
View Patent ↗
Granted: Sep 22, 1992
Filed: Nov 15, 1991
Inventors
Andreas von Sprecher
Andreas Beck
Bruno Schaub
Robert W. Lang
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.