Granted Patent
Utility
US 4,983,608 · App. 07/402,415
N-substituted-4-pyrimidinamines and pyrimidinediamines
Inventors:
Richard C. Effland, Joseph T. Klein, Larry Davis, Gordon E. Olsen
Patented Case
View Patent ↗
Granted: Jan 8, 1991
Filed: Sep 5, 1989
Inventors
Richard C. Effland
Joseph T. Klein
Larry Davis
Gordon E. Olsen
Assignee (at issue)
Hoechst Roussel Pharmaceuticals
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.