Granted Patent
Utility
US 4,980,457 · App. 07/095,466
Cytotoxic conjugates which can be used in therapy and process for their preparation
Inventors:
Franz Jansen, Pierre Gros
Patented Case
View Patent ↗
Granted: Dec 25, 1990
Filed: Sep 11, 1987
Inventors
Franz Jansen
Pierre Gros
Assignee (at issue)
Sanofi
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.