Granted Patent
Utility
US 5,252,575 · App. 07/886,710
Antiviral purine derivatives with improved gastrointestinal absorption
Inventors:
Michael R. Harnden, Paul Graham Wyatt, Leslie J. A. Jennings
Patented Case
View Patent ↗
Granted: Oct 12, 1993
Filed: May 21, 1992
Inventors
Michael R. Harnden
Paul Graham Wyatt
Leslie J. A. Jennings
Assignee (at issue)
Beecham Group plc
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.