Granted Patent
Utility
US 4,808,572 · App. 06/936,671
.alpha.-Hydroxy thioethers
Inventors:
Andreas Beck, Werner Breitenstein, Andreas von Sprecher, Robert W. Lang, Konrad Oertle
Patented Case
View Patent ↗
Granted: Feb 28, 1989
Filed: Dec 1, 1986
Inventors
Andreas Beck
Werner Breitenstein
Andreas von Sprecher
Robert W. Lang
Konrad Oertle
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.