Granted Patent
Utility
US 6,326,490 · App. 08/949,180
Tetraphosphonate bicyclic trisanhydrides
Inventors:
Krzysztof W. Pankiewicz, Krystyna Lesiak, Kyoichi A. Watanabe
Patented Case
View Patent ↗
Granted: Dec 4, 2001
Filed: Oct 10, 1997
Inventors
Krzysztof W. Pankiewicz
Krystyna Lesiak
Kyoichi A. Watanabe
Assignee (at issue)
Pharmasset, Inc.
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.