Granted Patent
Utility
US 5,103,012 · App. 07/582,386
3-acetoxymethyl-7-(iminoacetamino)-cephalosporanic acid derivatives
Inventors:
Rene Heymes, Andre Lutz
Patented Case
View Patent ↗
Granted: Apr 7, 1992
Filed: Sep 13, 1990
Inventors
Rene Heymes
Andre Lutz
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.