Granted Patent
Utility
US 5,059,698 · App. 07/363,801
Unsaturated beta-keto-ester acetals
Inventors:
Adrian Schulthess, Max Hunziker
Patented Case
View Patent ↗
Granted: Oct 22, 1991
Filed: Jun 9, 1989
Inventors
Adrian Schulthess
Max Hunziker
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.