Granted Patent
Utility
US 4,436,903 · App. 06/329,916
Process for the production of 7 .beta.-substituted-3-unsubstituted-3-cephem-4-carboxylic acid compounds
Inventors:
Gottfried Sedelmeier, Riccardo Scartazzini
Patented Case
View Patent ↗
Granted: Mar 13, 1984
Filed: Dec 11, 1981
Inventors
Gottfried Sedelmeier
Riccardo Scartazzini
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.