Granted Patent
Utility
US 4,722,840 · App. 06/777,976
Hybrid particle immunogens
Inventors:
Pablo D. T. Valenzuela, George Kuo, Philip J. Barr
Patented Case
View Patent ↗
Granted: Feb 2, 1988
Filed: Sep 19, 1985
Inventors
Pablo D. T. Valenzuela
George Kuo
Philip J. Barr
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.