Granted Patent
Utility
US 5,284,837 · App. 07/601,693
Derivatives of purine, process for their preparation and a pharmaceutical preparation
Inventors:
Bjorn Lindborg, Roelf Datema, Karl N. G. Johansson, Bo F. berg
Patented Case
View Patent ↗
Granted: Feb 8, 1994
Filed: Dec 26, 1990
Inventors
Bjorn Lindborg
Roelf Datema
Karl N. G. Johansson
Bo F. berg
Assignee (at issue)
MEDIVIR AB
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.