Granted Patent
Utility
US 4,789,673 · App. 07/119,360
Heterocyclic carboxylic acid amides and esters
Inventors:
Peter Donatsch, Gunter Engel, Bruno Hugi, Brian P. Richardson, Hildegard R. Stadler, Brigitte Maria STÄDLER, Sigrid A. Stadler, Gerald Breuleux, legal representative
Patented Case
View Patent ↗
Granted: Dec 6, 1988
Filed: Nov 10, 1987
Inventors
Peter Donatsch
Gunter Engel
Bruno Hugi
Brian P. Richardson
Hildegard R. Stadler
Brigitte Maria STÄDLER
Sigrid A. Stadler
Gerald Breuleux, legal representative
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.