Granted Patent
Utility
US 4,554,348 · App. 06/573,237
2-Amino-cinnamoylthiophene acid azo dye compounds having an aniline, tetrahydroquinoline, or benzomorpholine coupler
Inventor:
Robert Gourley
Patented Case
View Patent ↗
Granted: Nov 19, 1985
Filed: Jan 23, 1984
Inventor
Robert Gourley
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.