Granted Patent
Utility
US 4,775,760 · App. 07/041,513
Dibenzo[f,ij]isoquinoline-2,7-dione derivatives
Inventors:
Wayne P. Pruett, Samuel D. Hilbert, John Gerard Thompson, Max A. Weaver
Patented Case
View Patent ↗
Granted: Oct 4, 1988
Filed: Apr 23, 1987
Inventors
Wayne P. Pruett
Samuel D. Hilbert
John Gerard Thompson
Max A. Weaver
Assignee (at issue)
EASTMAN KODAK 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.