Granted Patent
Utility
US 6,656,938 · App. 10/013,060
Urea substituted imidazoquinoline ethers
Inventors:
Stephen L. Crooks, George W. Griesgraber, Philip D. Heppner, Bryon A. Merrill
Patented Case
View Patent ↗
Granted: Dec 2, 2003
Filed: Dec 6, 2001
Inventors
Stephen L. Crooks
George W. Griesgraber
Philip D. Heppner
Bryon A. Merrill
Assignee (at issue)
3M INNOVATIVE PROPERTIES COMPANY
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.