Granted Patent
Utility
US 4,908,359 · App. 07/153,148
1-dethia-2-thia-cephalosporanic acids
Inventors:
Germain Costerousse, Solange Gouin d'Ambrieres, Jean-Georges Teutsch
Patented Case
View Patent ↗
Granted: Mar 13, 1990
Filed: Feb 8, 1988
Inventors
Germain Costerousse
Solange Gouin d'Ambrieres
Jean-Georges Teutsch
Assignee (at issue)
Roussel Uclaf
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.