Granted Patent
Utility
US 4,331,676 · App. 05/902,639
Thia-aza compounds with a .beta.-lactam ring
Inventors:
Jacques Gosteli, Ivan Ernest, Robert B. Woodward
Patented Case
View Patent ↗
Granted: May 25, 1982
Filed: May 4, 1978
Inventors
Jacques Gosteli
Ivan Ernest
Robert B. Woodward
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.