Granted Patent
Utility
US 5,817,672 · App. 08/477,344
Trans cyclopentanyl purine analogs useful as immunosuppressants
Inventors:
David R. Borcherding, Carl K. Edwards, III, Ronald E. Esser, Douglas L. Cole
Patented Case
View Patent ↗
Granted: Oct 6, 1998
Filed: Jun 7, 1995
Inventors
David R. Borcherding
Carl K. Edwards, III
Ronald E. Esser
Douglas L. Cole
Assignee (at issue)
Hoechst Marion Roussel
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.