Granted Patent
Utility
US 4,894,443 · App. 06/648,759
Toxin conjugates
Inventors:
Lawrence Greenfield, Donald A. Kaplan, Danute E. Nitecki
Patented Case
View Patent ↗
Granted: Jan 16, 1990
Filed: Sep 7, 1984
Inventors
Lawrence Greenfield
Donald A. Kaplan
Danute E. Nitecki
Assignee (at issue)
Cetus Corporation
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.