Granted Patent
Utility
US 5,281,605 · App. 07/767,290
Novel xanthine derivatives
Inventors:
Zoltan Lajos Kis, John Morley
Patented Case
View Patent ↗
Granted: Jan 25, 1994
Filed: Sep 27, 1991
Inventors
Zoltan Lajos Kis
John Morley
Assignee (at issue)
Sandoz AG
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.