Granted Patent
Utility
US 6,054,444 · App. 08/842,360
Phosphonic acid derivatives
Inventors:
Paul F. Jackson, Keith M. Maclin, Kevin L. Tays, Barbara Slusher
Patented Case
View Patent ↗
Granted: Apr 25, 2000
Filed: Apr 24, 1997
Inventors
Paul F. Jackson
Keith M. Maclin
Kevin L. Tays
Barbara Slusher
Assignee (at issue)
Guilford Pharmaceuticals, 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.