Granted Patent
Utility
US 6,312,889 · App. 08/440,549
Combinations of hepatitis c virus (HCV) antigens for use in immunoassays for anti-HCV antibodies
Inventors:
Michael Houghton, Qui-Lim Choo, George Kuo
Patented Case
View Patent ↗
Granted: Nov 6, 2001
Filed: May 12, 1995
Inventors
Michael Houghton
Qui-Lim Choo
George Kuo
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.