Granted Patent
Utility
US 5,889,156 · App. 08/449,689
TNF deletion muteins
Inventors:
Michael Kriegler, Carl Perez
Patented Case
View Patent ↗
Granted: Mar 30, 1999
Filed: May 24, 1995
Inventors
Michael Kriegler
Carl Perez
Assignee (at issue)
Chiron 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.