Granted Patent
Utility
US 6,187,922 · App. 09/238,777
Process for the preparation of purine derivatives
Inventors:
Graham Richard Geen, Richard Jarvest
Patented Case
View Patent ↗
Granted: Feb 13, 2001
Filed: Jan 27, 1999
Inventors
Graham Richard Geen
Richard Jarvest
Assignee (at issue)
SmithKline Beeacham P.L.C.
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.