Granted Patent
Utility
US 5,700,915 · App. 08/366,391
Human interleukin immunopurification processes
Inventors:
John S. Abrams, Isabelle Chretien, Frank Lee, Michael K. Pearce
Patented Case
View Patent ↗
Granted: Dec 23, 1997
Filed: Dec 29, 1994
Inventors
John S. Abrams
Isabelle Chretien
Frank Lee
Michael K. Pearce
Assignee (at issue)
SCHERING 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.