Granted Patent
Utility
US 4,745,173 · App. 07/017,959
Condensation copolymers containing 2,5-diarylaminoterephthalic acid type colorants and products therefrom
Inventors:
Max A. Weaver, Wayne P. Pruett, Samuel D. Hilbert
Patented Case
View Patent ↗
Granted: May 17, 1988
Filed: Feb 24, 1987
Inventors
Max A. Weaver
Wayne P. Pruett
Samuel D. Hilbert
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.