Granted Patent
Utility
US 5,208,020 · App. 07/911,380
Cytotoxic agents comprising maytansinoids and their therapeutic use
Inventors:
Ravi Chari, Victor S. Goldmacher, John M. Lambert, Walter A. Blattler
Patented Case
View Patent ↗
Granted: May 4, 1993
Filed: Jul 13, 1992
Inventors
Ravi Chari
Victor S. Goldmacher
John M. Lambert
Walter A. Blattler
Assignee (at issue)
IMMUNOGEN, INC.
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.