Granted Patent
Utility
US 5,593,822 · App. 08/163,186
IgG depleted serum preparations and methods for antibody production
Inventors:
Qing Si Zeng, Reiko F. Irie
Patented Case
View Patent ↗
Granted: Jan 14, 1997
Filed: Dec 7, 1993
Inventors
Qing Si Zeng
Reiko F. Irie
Assignee (at issue)
JOHN WAYNE CANCER INSTITUTE
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.